Home / 42,247.40-63,374.40-18,876.20

Finding the Fourth Proportional to 42,247.40, 63,374.40 and 18,876.20

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Solution

The fourth proportional to 42,247.40, 63,374.40 and 18,876.20 is: 28,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,247.40 : 63,374.40 = 18,876.20 : x
  2. Step 2: Convert to fraction form
    42,247.40/63,374.40 = 18,876.20/x
  3. Step 3: Cross multiply
    42,247.40x = 63,374.40 × 18,876.20
  4. Step 4: Simplify right side
    42,247.40x = 1,196,267,849.28
  5. Step 5: Solve for x
    x = 1,196,267,849.28/42,247.40
  6. Step 6: Final answer
    x = 28,315.77

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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.