Home / 28,351.20-42,527.50-13,561.68

Finding the Fourth Proportional to 28,351.20, 42,527.50 and 13,561.68

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Solution

The fourth proportional to 28,351.20, 42,527.50 and 13,561.68 is: 20,342.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.20 : 42,527.50 = 13,561.68 : x
  2. Step 2: Convert to fraction form
    28,351.20/42,527.50 = 13,561.68/x
  3. Step 3: Cross multiply
    28,351.20x = 42,527.50 × 13,561.68
  4. Step 4: Simplify right side
    28,351.20x = 576,744,346.20
  5. Step 5: Solve for x
    x = 576,744,346.20/28,351.20
  6. Step 6: Final answer
    x = 20,342.85

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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.