Home / 39,779.45-59,660.78-11,691.87

Finding the Fourth Proportional to 39,779.45, 59,660.78 and 11,691.87

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Solution

The fourth proportional to 39,779.45, 59,660.78 and 11,691.87 is: 17,535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.45 : 59,660.78 = 11,691.87 : x
  2. Step 2: Convert to fraction form
    39,779.45/59,660.78 = 11,691.87/x
  3. Step 3: Cross multiply
    39,779.45x = 59,660.78 × 11,691.87
  4. Step 4: Simplify right side
    39,779.45x = 697,546,002.35
  5. Step 5: Solve for x
    x = 697,546,002.35/39,779.45
  6. Step 6: Final answer
    x = 17,535.33

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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.