Home / 31,127.04-42,947.28-18,542.88

Finding the Fourth Proportional to 31,127.04, 42,947.28 and 18,542.88

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Solution

The fourth proportional to 31,127.04, 42,947.28 and 18,542.88 is: 25,584.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,127.04 : 42,947.28 = 18,542.88 : x
  2. Step 2: Convert to fraction form
    31,127.04/42,947.28 = 18,542.88/x
  3. Step 3: Cross multiply
    31,127.04x = 42,947.28 × 18,542.88
  4. Step 4: Simplify right side
    31,127.04x = 796,366,259.37
  5. Step 5: Solve for x
    x = 796,366,259.37/31,127.04
  6. Step 6: Final answer
    x = 25,584.39

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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.