Home / 31,386.80-47,251.20-27,101.36

Finding the Fourth Proportional to 31,386.80, 47,251.20 and 27,101.36

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Solution

The fourth proportional to 31,386.80, 47,251.20 and 27,101.36 is: 40,799.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.80 : 47,251.20 = 27,101.36 : x
  2. Step 2: Convert to fraction form
    31,386.80/47,251.20 = 27,101.36/x
  3. Step 3: Cross multiply
    31,386.80x = 47,251.20 × 27,101.36
  4. Step 4: Simplify right side
    31,386.80x = 1,280,571,781.63
  5. Step 5: Solve for x
    x = 1,280,571,781.63/31,386.80
  6. Step 6: Final answer
    x = 40,799.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.