Home / 31,205.20-42,972.47-27,115.28

Finding the Fourth Proportional to 31,205.20, 42,972.47 and 27,115.28

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Solution

The fourth proportional to 31,205.20, 42,972.47 and 27,115.28 is: 37,340.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,205.20 : 42,972.47 = 27,115.28 : x
  2. Step 2: Convert to fraction form
    31,205.20/42,972.47 = 27,115.28/x
  3. Step 3: Cross multiply
    31,205.20x = 42,972.47 × 27,115.28
  4. Step 4: Simplify right side
    31,205.20x = 1,165,210,513.33
  5. Step 5: Solve for x
    x = 1,165,210,513.33/31,205.20
  6. Step 6: Final answer
    x = 37,340.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.