Home / 20,132.16-27,780.48-18,646.08

Finding the Fourth Proportional to 20,132.16, 27,780.48 and 18,646.08

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Solution

The fourth proportional to 20,132.16, 27,780.48 and 18,646.08 is: 25,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.16 : 27,780.48 = 18,646.08 : x
  2. Step 2: Convert to fraction form
    20,132.16/27,780.48 = 18,646.08/x
  3. Step 3: Cross multiply
    20,132.16x = 27,780.48 × 18,646.08
  4. Step 4: Simplify right side
    20,132.16x = 517,997,052.52
  5. Step 5: Solve for x
    x = 517,997,052.52/20,132.16
  6. Step 6: Final answer
    x = 25,729.83

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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.