Home / 27,855.83-38,443.71-15,916.91

Finding the Fourth Proportional to 27,855.83, 38,443.71 and 15,916.91

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Solution

The fourth proportional to 27,855.83, 38,443.71 and 15,916.91 is: 21,966.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.83 : 38,443.71 = 15,916.91 : x
  2. Step 2: Convert to fraction form
    27,855.83/38,443.71 = 15,916.91/x
  3. Step 3: Cross multiply
    27,855.83x = 38,443.71 × 15,916.91
  4. Step 4: Simplify right side
    27,855.83x = 611,904,939.61
  5. Step 5: Solve for x
    x = 611,904,939.61/27,855.83
  6. Step 6: Final answer
    x = 21,966.85

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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.