Home / 42,126.97-63,145.48-21,025.45

Finding the Fourth Proportional to 42,126.97, 63,145.48 and 21,025.45

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Solution

The fourth proportional to 42,126.97, 63,145.48 and 21,025.45 is: 31,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,126.97 : 63,145.48 = 21,025.45 : x
  2. Step 2: Convert to fraction form
    42,126.97/63,145.48 = 21,025.45/x
  3. Step 3: Cross multiply
    42,126.97x = 63,145.48 × 21,025.45
  4. Step 4: Simplify right side
    42,126.97x = 1,327,662,132.47
  5. Step 5: Solve for x
    x = 1,327,662,132.47/42,126.97
  6. Step 6: Final answer
    x = 31,515.73

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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.