Home / 42,622.80-63,934.20-13,040.70

Finding the Fourth Proportional to 42,622.80, 63,934.20 and 13,040.70

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Solution

The fourth proportional to 42,622.80, 63,934.20 and 13,040.70 is: 19,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,622.80 : 63,934.20 = 13,040.70 : x
  2. Step 2: Convert to fraction form
    42,622.80/63,934.20 = 13,040.70/x
  3. Step 3: Cross multiply
    42,622.80x = 63,934.20 × 13,040.70
  4. Step 4: Simplify right side
    42,622.80x = 833,746,721.94
  5. Step 5: Solve for x
    x = 833,746,721.94/42,622.80
  6. Step 6: Final answer
    x = 19,561.05

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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.