Home / 15,251.29-21,045.62-8,535.38

Finding the Fourth Proportional to 15,251.29, 21,045.62 and 8,535.38

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Solution

The fourth proportional to 15,251.29, 21,045.62 and 8,535.38 is: 11,778.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,251.29 : 21,045.62 = 8,535.38 : x
  2. Step 2: Convert to fraction form
    15,251.29/21,045.62 = 8,535.38/x
  3. Step 3: Cross multiply
    15,251.29x = 21,045.62 × 8,535.38
  4. Step 4: Simplify right side
    15,251.29x = 179,632,280.15
  5. Step 5: Solve for x
    x = 179,632,280.15/15,251.29
  6. Step 6: Final answer
    x = 11,778.17

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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.