Home / 27,387.47-37,780.20-18,874.77

Finding the Fourth Proportional to 27,387.47, 37,780.20 and 18,874.77

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Solution

The fourth proportional to 27,387.47, 37,780.20 and 18,874.77 is: 26,037.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,387.47 : 37,780.20 = 18,874.77 : x
  2. Step 2: Convert to fraction form
    27,387.47/37,780.20 = 18,874.77/x
  3. Step 3: Cross multiply
    27,387.47x = 37,780.20 × 18,874.77
  4. Step 4: Simplify right side
    27,387.47x = 713,092,585.55
  5. Step 5: Solve for x
    x = 713,092,585.55/27,387.47
  6. Step 6: Final answer
    x = 26,037.19

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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.