Home / 42,634.31-63,940.55-12,641.53

Finding the Fourth Proportional to 42,634.31, 63,940.55 and 12,641.53

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Solution

The fourth proportional to 42,634.31, 63,940.55 and 12,641.53 is: 18,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,634.31 : 63,940.55 = 12,641.53 : x
  2. Step 2: Convert to fraction form
    42,634.31/63,940.55 = 12,641.53/x
  3. Step 3: Cross multiply
    42,634.31x = 63,940.55 × 12,641.53
  4. Step 4: Simplify right side
    42,634.31x = 808,305,998.13
  5. Step 5: Solve for x
    x = 808,305,998.13/42,634.31
  6. Step 6: Final answer
    x = 18,959.05

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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.