Home / 11,781.56-16,254.05-8,722.70

Finding the Fourth Proportional to 11,781.56, 16,254.05 and 8,722.70

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Solution

The fourth proportional to 11,781.56, 16,254.05 and 8,722.70 is: 12,033.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.56 : 16,254.05 = 8,722.70 : x
  2. Step 2: Convert to fraction form
    11,781.56/16,254.05 = 8,722.70/x
  3. Step 3: Cross multiply
    11,781.56x = 16,254.05 × 8,722.70
  4. Step 4: Simplify right side
    11,781.56x = 141,779,170.71
  5. Step 5: Solve for x
    x = 141,779,170.71/11,781.56
  6. Step 6: Final answer
    x = 12,033.99

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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.