Home / 28,471.32-42,682.68-20,125.08

Finding the Fourth Proportional to 28,471.32, 42,682.68 and 20,125.08

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Solution

The fourth proportional to 28,471.32, 42,682.68 and 20,125.08 is: 30,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.32 : 42,682.68 = 20,125.08 : x
  2. Step 2: Convert to fraction form
    28,471.32/42,682.68 = 20,125.08/x
  3. Step 3: Cross multiply
    28,471.32x = 42,682.68 × 20,125.08
  4. Step 4: Simplify right side
    28,471.32x = 858,992,349.61
  5. Step 5: Solve for x
    x = 858,992,349.61/28,471.32
  6. Step 6: Final answer
    x = 30,170.44

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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.