Home / 20,502.38-28,295.42-12,549.90

Finding the Fourth Proportional to 20,502.38, 28,295.42 and 12,549.90

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Solution

The fourth proportional to 20,502.38, 28,295.42 and 12,549.90 is: 17,320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.38 : 28,295.42 = 12,549.90 : x
  2. Step 2: Convert to fraction form
    20,502.38/28,295.42 = 12,549.90/x
  3. Step 3: Cross multiply
    20,502.38x = 28,295.42 × 12,549.90
  4. Step 4: Simplify right side
    20,502.38x = 355,104,628.71
  5. Step 5: Solve for x
    x = 355,104,628.71/20,502.38
  6. Step 6: Final answer
    x = 17,320.17

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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.