Home / 42,156.80-63,236.28-19,964.96

Finding the Fourth Proportional to 42,156.80, 63,236.28 and 19,964.96

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Solution

The fourth proportional to 42,156.80, 63,236.28 and 19,964.96 is: 29,947.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,156.80 : 63,236.28 = 19,964.96 : x
  2. Step 2: Convert to fraction form
    42,156.80/63,236.28 = 19,964.96/x
  3. Step 3: Cross multiply
    42,156.80x = 63,236.28 × 19,964.96
  4. Step 4: Simplify right side
    42,156.80x = 1,262,509,800.75
  5. Step 5: Solve for x
    x = 1,262,509,800.75/42,156.80
  6. Step 6: Final answer
    x = 29,947.95

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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.