Home / 42,447.80-63,671.70-12,864.17

Finding the Fourth Proportional to 42,447.80, 63,671.70 and 12,864.17

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Solution

The fourth proportional to 42,447.80, 63,671.70 and 12,864.17 is: 19,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,447.80 : 63,671.70 = 12,864.17 : x
  2. Step 2: Convert to fraction form
    42,447.80/63,671.70 = 12,864.17/x
  3. Step 3: Cross multiply
    42,447.80x = 63,671.70 × 12,864.17
  4. Step 4: Simplify right side
    42,447.80x = 819,083,572.99
  5. Step 5: Solve for x
    x = 819,083,572.99/42,447.80
  6. Step 6: Final answer
    x = 19,296.26

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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.