Home / 28,210.20-38,937-16,280.64

Finding the Fourth Proportional to 28,210.20, 38,937 and 16,280.64

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Solution

The fourth proportional to 28,210.20, 38,937 and 16,280.64 is: 22,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.20 : 38,937 = 16,280.64 : x
  2. Step 2: Convert to fraction form
    28,210.20/38,937 = 16,280.64/x
  3. Step 3: Cross multiply
    28,210.20x = 38,937 × 16,280.64
  4. Step 4: Simplify right side
    28,210.20x = 633,919,279.68
  5. Step 5: Solve for x
    x = 633,919,279.68/28,210.20
  6. Step 6: Final answer
    x = 22,471.28

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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.