Home / 20,737.68-28,618.00-11,785.20

Finding the Fourth Proportional to 20,737.68, 28,618.00 and 11,785.20

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Solution

The fourth proportional to 20,737.68, 28,618.00 and 11,785.20 is: 16,263.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.68 : 28,618.00 = 11,785.20 : x
  2. Step 2: Convert to fraction form
    20,737.68/28,618.00 = 11,785.20/x
  3. Step 3: Cross multiply
    20,737.68x = 28,618.00 × 11,785.20
  4. Step 4: Simplify right side
    20,737.68x = 337,268,824.14
  5. Step 5: Solve for x
    x = 337,268,824.14/20,737.68
  6. Step 6: Final answer
    x = 16,263.58

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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.