Home / 27,686.91-38,257.92-19,715.30

Finding the Fourth Proportional to 27,686.91, 38,257.92 and 19,715.30

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Solution

The fourth proportional to 27,686.91, 38,257.92 and 19,715.30 is: 27,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,686.91 : 38,257.92 = 19,715.30 : x
  2. Step 2: Convert to fraction form
    27,686.91/38,257.92 = 19,715.30/x
  3. Step 3: Cross multiply
    27,686.91x = 38,257.92 × 19,715.30
  4. Step 4: Simplify right side
    27,686.91x = 754,266,322.35
  5. Step 5: Solve for x
    x = 754,266,322.35/27,686.91
  6. Step 6: Final answer
    x = 27,242.70

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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.