Home / 39,779.38-59,656.32-13,119.38

Finding the Fourth Proportional to 39,779.38, 59,656.32 and 13,119.38

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Solution

The fourth proportional to 39,779.38, 59,656.32 and 13,119.38 is: 19,674.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.38 : 59,656.32 = 13,119.38 : x
  2. Step 2: Convert to fraction form
    39,779.38/59,656.32 = 13,119.38/x
  3. Step 3: Cross multiply
    39,779.38x = 59,656.32 × 13,119.38
  4. Step 4: Simplify right side
    39,779.38x = 782,653,931.48
  5. Step 5: Solve for x
    x = 782,653,931.48/39,779.38
  6. Step 6: Final answer
    x = 19,674.87

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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.