Home / 42,377.12-63,540.96-12,786.08

Finding the Fourth Proportional to 42,377.12, 63,540.96 and 12,786.08

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Solution

The fourth proportional to 42,377.12, 63,540.96 and 12,786.08 is: 19,171.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,377.12 : 63,540.96 = 12,786.08 : x
  2. Step 2: Convert to fraction form
    42,377.12/63,540.96 = 12,786.08/x
  3. Step 3: Cross multiply
    42,377.12x = 63,540.96 × 12,786.08
  4. Step 4: Simplify right side
    42,377.12x = 812,439,797.84
  5. Step 5: Solve for x
    x = 812,439,797.84/42,377.12
  6. Step 6: Final answer
    x = 19,171.66

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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.