Home / 42,371.12-63,531.96-12,780.08

Finding the Fourth Proportional to 42,371.12, 63,531.96 and 12,780.08

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Solution

The fourth proportional to 42,371.12, 63,531.96 and 12,780.08 is: 19,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,371.12 : 63,531.96 = 12,780.08 : x
  2. Step 2: Convert to fraction form
    42,371.12/63,531.96 = 12,780.08/x
  3. Step 3: Cross multiply
    42,371.12x = 63,531.96 × 12,780.08
  4. Step 4: Simplify right side
    42,371.12x = 811,943,531.36
  5. Step 5: Solve for x
    x = 811,943,531.36/42,371.12
  6. Step 6: Final answer
    x = 19,162.66

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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.