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Finding the Fourth Proportional to 39,363.88, 59,045.88 and 11,977.86

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Solution

The fourth proportional to 39,363.88, 59,045.88 and 11,977.86 is: 17,966.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,363.88 : 59,045.88 = 11,977.86 : x
  2. Step 2: Convert to fraction form
    39,363.88/59,045.88 = 11,977.86/x
  3. Step 3: Cross multiply
    39,363.88x = 59,045.88 × 11,977.86
  4. Step 4: Simplify right side
    39,363.88x = 707,243,284.22
  5. Step 5: Solve for x
    x = 707,243,284.22/39,363.88
  6. Step 6: Final answer
    x = 17,966.81

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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.