Home / 42,252.40-63,381.90-18,881.20

Finding the Fourth Proportional to 42,252.40, 63,381.90 and 18,881.20

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Solution

The fourth proportional to 42,252.40, 63,381.90 and 18,881.20 is: 28,323.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,252.40 : 63,381.90 = 18,881.20 : x
  2. Step 2: Convert to fraction form
    42,252.40/63,381.90 = 18,881.20/x
  3. Step 3: Cross multiply
    42,252.40x = 63,381.90 × 18,881.20
  4. Step 4: Simplify right side
    42,252.40x = 1,196,726,330.28
  5. Step 5: Solve for x
    x = 1,196,726,330.28/42,252.40
  6. Step 6: Final answer
    x = 28,323.27

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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.