Home / 42,240.89-63,327.50-21,170.11

Finding the Fourth Proportional to 42,240.89, 63,327.50 and 21,170.11

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Solution

The fourth proportional to 42,240.89, 63,327.50 and 21,170.11 is: 31,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,240.89 : 63,327.50 = 21,170.11 : x
  2. Step 2: Convert to fraction form
    42,240.89/63,327.50 = 21,170.11/x
  3. Step 3: Cross multiply
    42,240.89x = 63,327.50 × 21,170.11
  4. Step 4: Simplify right side
    42,240.89x = 1,340,650,154.14
  5. Step 5: Solve for x
    x = 1,340,650,154.14/42,240.89
  6. Step 6: Final answer
    x = 31,738.21

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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.