Home / 39,686.55-59,531.64-13,391.52

Finding the Fourth Proportional to 39,686.55, 59,531.64 and 13,391.52

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Solution

The fourth proportional to 39,686.55, 59,531.64 and 13,391.52 is: 20,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,686.55 : 59,531.64 = 13,391.52 : x
  2. Step 2: Convert to fraction form
    39,686.55/59,531.64 = 13,391.52/x
  3. Step 3: Cross multiply
    39,686.55x = 59,531.64 × 13,391.52
  4. Step 4: Simplify right side
    39,686.55x = 797,219,147.69
  5. Step 5: Solve for x
    x = 797,219,147.69/39,686.55
  6. Step 6: Final answer
    x = 20,087.89

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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.