Home / 20,279.64-27,985.92-11,327.13

Finding the Fourth Proportional to 20,279.64, 27,985.92 and 11,327.13

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Solution

The fourth proportional to 20,279.64, 27,985.92 and 11,327.13 is: 15,631.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.64 : 27,985.92 = 11,327.13 : x
  2. Step 2: Convert to fraction form
    20,279.64/27,985.92 = 11,327.13/x
  3. Step 3: Cross multiply
    20,279.64x = 27,985.92 × 11,327.13
  4. Step 4: Simplify right side
    20,279.64x = 317,000,154.01
  5. Step 5: Solve for x
    x = 317,000,154.01/20,279.64
  6. Step 6: Final answer
    x = 15,631.45

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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.