Home / 28,785.76-39,724.32-16,210.24

Finding the Fourth Proportional to 28,785.76, 39,724.32 and 16,210.24

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Solution

The fourth proportional to 28,785.76, 39,724.32 and 16,210.24 is: 22,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.76 : 39,724.32 = 16,210.24 : x
  2. Step 2: Convert to fraction form
    28,785.76/39,724.32 = 16,210.24/x
  3. Step 3: Cross multiply
    28,785.76x = 39,724.32 × 16,210.24
  4. Step 4: Simplify right side
    28,785.76x = 643,940,761.04
  5. Step 5: Solve for x
    x = 643,940,761.04/28,785.76
  6. Step 6: Final answer
    x = 22,370.11

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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.