Home / 18,542.43-25,563.78-15,343.95

Finding the Fourth Proportional to 18,542.43, 25,563.78 and 15,343.95

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Solution

The fourth proportional to 18,542.43, 25,563.78 and 15,343.95 is: 21,154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,542.43 : 25,563.78 = 15,343.95 : x
  2. Step 2: Convert to fraction form
    18,542.43/25,563.78 = 15,343.95/x
  3. Step 3: Cross multiply
    18,542.43x = 25,563.78 × 15,343.95
  4. Step 4: Simplify right side
    18,542.43x = 392,249,362.13
  5. Step 5: Solve for x
    x = 392,249,362.13/18,542.43
  6. Step 6: Final answer
    x = 21,154.15

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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.