Home / 42,452.80-63,679.20-12,869.17

Finding the Fourth Proportional to 42,452.80, 63,679.20 and 12,869.17

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Solution

The fourth proportional to 42,452.80, 63,679.20 and 12,869.17 is: 19,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,452.80 : 63,679.20 = 12,869.17 : x
  2. Step 2: Convert to fraction form
    42,452.80/63,679.20 = 12,869.17/x
  3. Step 3: Cross multiply
    42,452.80x = 63,679.20 × 12,869.17
  4. Step 4: Simplify right side
    42,452.80x = 819,498,450.26
  5. Step 5: Solve for x
    x = 819,498,450.26/42,452.80
  6. Step 6: Final answer
    x = 19,303.76

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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.