Home / 20,700.28-28,566.52-11,268.88

Finding the Fourth Proportional to 20,700.28, 28,566.52 and 11,268.88

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Solution

The fourth proportional to 20,700.28, 28,566.52 and 11,268.88 is: 15,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.28 : 28,566.52 = 11,268.88 : x
  2. Step 2: Convert to fraction form
    20,700.28/28,566.52 = 11,268.88/x
  3. Step 3: Cross multiply
    20,700.28x = 28,566.52 × 11,268.88
  4. Step 4: Simplify right side
    20,700.28x = 321,912,685.90
  5. Step 5: Solve for x
    x = 321,912,685.90/20,700.28
  6. Step 6: Final answer
    x = 15,551.13

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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.