Home / 42,149.95-63,256.12-19,963.40

Finding the Fourth Proportional to 42,149.95, 63,256.12 and 19,963.40

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Solution

The fourth proportional to 42,149.95, 63,256.12 and 19,963.40 is: 29,959.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,149.95 : 63,256.12 = 19,963.40 : x
  2. Step 2: Convert to fraction form
    42,149.95/63,256.12 = 19,963.40/x
  3. Step 3: Cross multiply
    42,149.95x = 63,256.12 × 19,963.40
  4. Step 4: Simplify right side
    42,149.95x = 1,262,806,972.11
  5. Step 5: Solve for x
    x = 1,262,806,972.11/42,149.95
  6. Step 6: Final answer
    x = 29,959.87

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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.