Home / 31,435.76-47,146.98-9,243.12

Finding the Fourth Proportional to 31,435.76, 47,146.98 and 9,243.12

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Solution

The fourth proportional to 31,435.76, 47,146.98 and 9,243.12 is: 13,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.76 : 47,146.98 = 9,243.12 : x
  2. Step 2: Convert to fraction form
    31,435.76/47,146.98 = 9,243.12/x
  3. Step 3: Cross multiply
    31,435.76x = 47,146.98 × 9,243.12
  4. Step 4: Simplify right side
    31,435.76x = 435,785,193.78
  5. Step 5: Solve for x
    x = 435,785,193.78/31,435.76
  6. Step 6: Final answer
    x = 13,862.72

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1.5x scale

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.