Home / 11,781.72-16,246.44-8,792.76

Finding the Fourth Proportional to 11,781.72, 16,246.44 and 8,792.76

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Solution

The fourth proportional to 11,781.72, 16,246.44 and 8,792.76 is: 12,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.72 : 16,246.44 = 8,792.76 : x
  2. Step 2: Convert to fraction form
    11,781.72/16,246.44 = 8,792.76/x
  3. Step 3: Cross multiply
    11,781.72x = 16,246.44 × 8,792.76
  4. Step 4: Simplify right side
    11,781.72x = 142,851,047.77
  5. Step 5: Solve for x
    x = 142,851,047.77/11,781.72
  6. Step 6: Final answer
    x = 12,124.80

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Find fourth proportional to 5,890.86, 8,123.22 and 4,396.38
Half scale
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Double scale
Find fourth proportional to 11,782.72, 16,247.82 and 8,793.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.