Home / 42,972.20-64,458.29-13,392.41

Finding the Fourth Proportional to 42,972.20, 64,458.29 and 13,392.41

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Solution

The fourth proportional to 42,972.20, 64,458.29 and 13,392.41 is: 20,088.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,972.20 : 64,458.29 = 13,392.41 : x
  2. Step 2: Convert to fraction form
    42,972.20/64,458.29 = 13,392.41/x
  3. Step 3: Cross multiply
    42,972.20x = 64,458.29 × 13,392.41
  4. Step 4: Simplify right side
    42,972.20x = 863,251,847.58
  5. Step 5: Solve for x
    x = 863,251,847.58/42,972.20
  6. Step 6: Final answer
    x = 20,088.61

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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.