Home / 28,191.38-38,905.31-15,616.13

Finding the Fourth Proportional to 28,191.38, 38,905.31 and 15,616.13

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Solution

The fourth proportional to 28,191.38, 38,905.31 and 15,616.13 is: 21,550.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.38 : 38,905.31 = 15,616.13 : x
  2. Step 2: Convert to fraction form
    28,191.38/38,905.31 = 15,616.13/x
  3. Step 3: Cross multiply
    28,191.38x = 38,905.31 × 15,616.13
  4. Step 4: Simplify right side
    28,191.38x = 607,550,223.16
  5. Step 5: Solve for x
    x = 607,550,223.16/28,191.38
  6. Step 6: Final answer
    x = 21,550.93

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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.