Home / 20,691.12-28,527.06-15,034.08

Finding the Fourth Proportional to 20,691.12, 28,527.06 and 15,034.08

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Solution

The fourth proportional to 20,691.12, 28,527.06 and 15,034.08 is: 20,727.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.12 : 28,527.06 = 15,034.08 : x
  2. Step 2: Convert to fraction form
    20,691.12/28,527.06 = 15,034.08/x
  3. Step 3: Cross multiply
    20,691.12x = 28,527.06 × 15,034.08
  4. Step 4: Simplify right side
    20,691.12x = 428,878,102.20
  5. Step 5: Solve for x
    x = 428,878,102.20/20,691.12
  6. Step 6: Final answer
    x = 20,727.64

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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.