Home / 14,778.60-20,396.52-8,490.84

Finding the Fourth Proportional to 14,778.60, 20,396.52 and 8,490.84

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Solution

The fourth proportional to 14,778.60, 20,396.52 and 8,490.84 is: 11,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.60 : 20,396.52 = 8,490.84 : x
  2. Step 2: Convert to fraction form
    14,778.60/20,396.52 = 8,490.84/x
  3. Step 3: Cross multiply
    14,778.60x = 20,396.52 × 8,490.84
  4. Step 4: Simplify right side
    14,778.60x = 173,183,587.88
  5. Step 5: Solve for x
    x = 173,183,587.88/14,778.60
  6. Step 6: Final answer
    x = 11,718.54

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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.