Home / 31,862.60-47,785.69-13,147.95

Finding the Fourth Proportional to 31,862.60, 47,785.69 and 13,147.95

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Solution

The fourth proportional to 31,862.60, 47,785.69 and 13,147.95 is: 19,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,862.60 : 47,785.69 = 13,147.95 : x
  2. Step 2: Convert to fraction form
    31,862.60/47,785.69 = 13,147.95/x
  3. Step 3: Cross multiply
    31,862.60x = 47,785.69 × 13,147.95
  4. Step 4: Simplify right side
    31,862.60x = 628,283,829.97
  5. Step 5: Solve for x
    x = 628,283,829.97/31,862.60
  6. Step 6: Final answer
    x = 19,718.54

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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.