Home / 27,545.54-38,031.15-21,160.76

Finding the Fourth Proportional to 27,545.54, 38,031.15 and 21,160.76

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Solution

The fourth proportional to 27,545.54, 38,031.15 and 21,160.76 is: 29,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,545.54 : 38,031.15 = 21,160.76 : x
  2. Step 2: Convert to fraction form
    27,545.54/38,031.15 = 21,160.76/x
  3. Step 3: Cross multiply
    27,545.54x = 38,031.15 × 21,160.76
  4. Step 4: Simplify right side
    27,545.54x = 804,768,037.67
  5. Step 5: Solve for x
    x = 804,768,037.67/27,545.54
  6. Step 6: Final answer
    x = 29,215.91

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Half scale
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Double scale
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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.