Home / 42,481.47-63,718.09-12,899.56

Finding the Fourth Proportional to 42,481.47, 63,718.09 and 12,899.56

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Solution

The fourth proportional to 42,481.47, 63,718.09 and 12,899.56 is: 19,348.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,481.47 : 63,718.09 = 12,899.56 : x
  2. Step 2: Convert to fraction form
    42,481.47/63,718.09 = 12,899.56/x
  3. Step 3: Cross multiply
    42,481.47x = 63,718.09 × 12,899.56
  4. Step 4: Simplify right side
    42,481.47x = 821,935,292.79
  5. Step 5: Solve for x
    x = 821,935,292.79/42,481.47
  6. Step 6: Final answer
    x = 19,348.09

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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.