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Finding the Fourth Proportional to 19,169.92, 28,734.27 and 9,287.38

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Solution

The fourth proportional to 19,169.92, 28,734.27 and 9,287.38 is: 13,921.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,169.92 : 28,734.27 = 9,287.38 : x
  2. Step 2: Convert to fraction form
    19,169.92/28,734.27 = 9,287.38/x
  3. Step 3: Cross multiply
    19,169.92x = 28,734.27 × 9,287.38
  4. Step 4: Simplify right side
    19,169.92x = 266,866,084.51
  5. Step 5: Solve for x
    x = 266,866,084.51/19,169.92
  6. Step 6: Final answer
    x = 13,921.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.