Home / 20,279.53-27,985.45-11,327.16

Finding the Fourth Proportional to 20,279.53, 27,985.45 and 11,327.16

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Solution

The fourth proportional to 20,279.53, 27,985.45 and 11,327.16 is: 15,631.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.53 : 27,985.45 = 11,327.16 : x
  2. Step 2: Convert to fraction form
    20,279.53/27,985.45 = 11,327.16/x
  3. Step 3: Cross multiply
    20,279.53x = 27,985.45 × 11,327.16
  4. Step 4: Simplify right side
    20,279.53x = 316,995,613.19
  5. Step 5: Solve for x
    x = 316,995,613.19/20,279.53
  6. Step 6: Final answer
    x = 15,631.31

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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.