Home / 42,400.61-63,603.14-12,817.69

Finding the Fourth Proportional to 42,400.61, 63,603.14 and 12,817.69

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Solution

The fourth proportional to 42,400.61, 63,603.14 and 12,817.69 is: 19,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,400.61 : 63,603.14 = 12,817.69 : x
  2. Step 2: Convert to fraction form
    42,400.61/63,603.14 = 12,817.69/x
  3. Step 3: Cross multiply
    42,400.61x = 63,603.14 × 12,817.69
  4. Step 4: Simplify right side
    42,400.61x = 815,245,108.45
  5. Step 5: Solve for x
    x = 815,245,108.45/42,400.61
  6. Step 6: Final answer
    x = 19,227.20

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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.