Home / 20,449.52-30,688.40-13,432.89

Finding the Fourth Proportional to 20,449.52, 30,688.40 and 13,432.89

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Solution

The fourth proportional to 20,449.52, 30,688.40 and 13,432.89 is: 20,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.52 : 30,688.40 = 13,432.89 : x
  2. Step 2: Convert to fraction form
    20,449.52/30,688.40 = 13,432.89/x
  3. Step 3: Cross multiply
    20,449.52x = 30,688.40 × 13,432.89
  4. Step 4: Simplify right side
    20,449.52x = 412,233,834.31
  5. Step 5: Solve for x
    x = 412,233,834.31/20,449.52
  6. Step 6: Final answer
    x = 20,158.61

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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.