Home / 42,378.30-63,569.88-12,799.13

Finding the Fourth Proportional to 42,378.30, 63,569.88 and 12,799.13

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Solution

The fourth proportional to 42,378.30, 63,569.88 and 12,799.13 is: 19,199.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,378.30 : 63,569.88 = 12,799.13 : x
  2. Step 2: Convert to fraction form
    42,378.30/63,569.88 = 12,799.13/x
  3. Step 3: Cross multiply
    42,378.30x = 63,569.88 × 12,799.13
  4. Step 4: Simplify right side
    42,378.30x = 813,638,840.36
  5. Step 5: Solve for x
    x = 813,638,840.36/42,378.30
  6. Step 6: Final answer
    x = 19,199.42

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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.