Home / 28,117.38-38,801.99-15,542.13

Finding the Fourth Proportional to 28,117.38, 38,801.99 and 15,542.13

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Solution

The fourth proportional to 28,117.38, 38,801.99 and 15,542.13 is: 21,448.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.38 : 38,801.99 = 15,542.13 : x
  2. Step 2: Convert to fraction form
    28,117.38/38,801.99 = 15,542.13/x
  3. Step 3: Cross multiply
    28,117.38x = 38,801.99 × 15,542.13
  4. Step 4: Simplify right side
    28,117.38x = 603,065,572.84
  5. Step 5: Solve for x
    x = 603,065,572.84/28,117.38
  6. Step 6: Final answer
    x = 21,448.14

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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.