Home / 20,262.71-27,929.06-13,545.89

Finding the Fourth Proportional to 20,262.71, 27,929.06 and 13,545.89

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Solution

The fourth proportional to 20,262.71, 27,929.06 and 13,545.89 is: 18,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.71 : 27,929.06 = 13,545.89 : x
  2. Step 2: Convert to fraction form
    20,262.71/27,929.06 = 13,545.89/x
  3. Step 3: Cross multiply
    20,262.71x = 27,929.06 × 13,545.89
  4. Step 4: Simplify right side
    20,262.71x = 378,323,868.78
  5. Step 5: Solve for x
    x = 378,323,868.78/20,262.71
  6. Step 6: Final answer
    x = 18,670.95

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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.