Home / 28,292.38-39,044.09-15,545.72

Finding the Fourth Proportional to 28,292.38, 39,044.09 and 15,545.72

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Solution

The fourth proportional to 28,292.38, 39,044.09 and 15,545.72 is: 21,453.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.38 : 39,044.09 = 15,545.72 : x
  2. Step 2: Convert to fraction form
    28,292.38/39,044.09 = 15,545.72/x
  3. Step 3: Cross multiply
    28,292.38x = 39,044.09 × 15,545.72
  4. Step 4: Simplify right side
    28,292.38x = 606,968,490.79
  5. Step 5: Solve for x
    x = 606,968,490.79/28,292.38
  6. Step 6: Final answer
    x = 21,453.43

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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.