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Finding the Fourth Proportional to 42,422.74, 63,645.75 and 12,841.74

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Solution

The fourth proportional to 42,422.74, 63,645.75 and 12,841.74 is: 19,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,422.74 : 63,645.75 = 12,841.74 : x
  2. Step 2: Convert to fraction form
    42,422.74/63,645.75 = 12,841.74/x
  3. Step 3: Cross multiply
    42,422.74x = 63,645.75 × 12,841.74
  4. Step 4: Simplify right side
    42,422.74x = 817,322,173.61
  5. Step 5: Solve for x
    x = 817,322,173.61/42,422.74
  6. Step 6: Final answer
    x = 19,266.13

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1.5x scale

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.