Home / 39,427.80-59,151.16-13,132.78

Finding the Fourth Proportional to 39,427.80, 59,151.16 and 13,132.78

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Solution

The fourth proportional to 39,427.80, 59,151.16 and 13,132.78 is: 19,702.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,427.80 : 59,151.16 = 13,132.78 : x
  2. Step 2: Convert to fraction form
    39,427.80/59,151.16 = 13,132.78/x
  3. Step 3: Cross multiply
    39,427.80x = 59,151.16 × 13,132.78
  4. Step 4: Simplify right side
    39,427.80x = 776,819,171.02
  5. Step 5: Solve for x
    x = 776,819,171.02/39,427.80
  6. Step 6: Final answer
    x = 19,702.32

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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.