Home / 42,529.68-63,776.10-12,940.65

Finding the Fourth Proportional to 42,529.68, 63,776.10 and 12,940.65

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Solution

The fourth proportional to 42,529.68, 63,776.10 and 12,940.65 is: 19,405.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,529.68 : 63,776.10 = 12,940.65 : x
  2. Step 2: Convert to fraction form
    42,529.68/63,776.10 = 12,940.65/x
  3. Step 3: Cross multiply
    42,529.68x = 63,776.10 × 12,940.65
  4. Step 4: Simplify right side
    42,529.68x = 825,304,188.47
  5. Step 5: Solve for x
    x = 825,304,188.47/42,529.68
  6. Step 6: Final answer
    x = 19,405.37

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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.