Home / 42,113.88-63,170.76-12,531.66

Finding the Fourth Proportional to 42,113.88, 63,170.76 and 12,531.66

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Solution

The fourth proportional to 42,113.88, 63,170.76 and 12,531.66 is: 18,797.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,113.88 : 63,170.76 = 12,531.66 : x
  2. Step 2: Convert to fraction form
    42,113.88/63,170.76 = 12,531.66/x
  3. Step 3: Cross multiply
    42,113.88x = 63,170.76 × 12,531.66
  4. Step 4: Simplify right side
    42,113.88x = 791,634,486.26
  5. Step 5: Solve for x
    x = 791,634,486.26/42,113.88
  6. Step 6: Final answer
    x = 18,797.47

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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.