Home / 28,168.20-42,264.38-13,387.56

Finding the Fourth Proportional to 28,168.20, 42,264.38 and 13,387.56

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Solution

The fourth proportional to 28,168.20, 42,264.38 and 13,387.56 is: 20,087.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.20 : 42,264.38 = 13,387.56 : x
  2. Step 2: Convert to fraction form
    28,168.20/42,264.38 = 13,387.56/x
  3. Step 3: Cross multiply
    28,168.20x = 42,264.38 × 13,387.56
  4. Step 4: Simplify right side
    28,168.20x = 565,816,923.11
  5. Step 5: Solve for x
    x = 565,816,923.11/28,168.20
  6. Step 6: Final answer
    x = 20,087.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.