Home / 27,649.42-38,157.89-15,715.08

Finding the Fourth Proportional to 27,649.42, 38,157.89 and 15,715.08

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Solution

The fourth proportional to 27,649.42, 38,157.89 and 15,715.08 is: 21,687.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,649.42 : 38,157.89 = 15,715.08 : x
  2. Step 2: Convert to fraction form
    27,649.42/38,157.89 = 15,715.08/x
  3. Step 3: Cross multiply
    27,649.42x = 38,157.89 × 15,715.08
  4. Step 4: Simplify right side
    27,649.42x = 599,654,215.41
  5. Step 5: Solve for x
    x = 599,654,215.41/27,649.42
  6. Step 6: Final answer
    x = 21,687.77

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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.