Home / 18,358.11-25,312.01-15,520.48

Finding the Fourth Proportional to 18,358.11, 25,312.01 and 15,520.48

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Solution

The fourth proportional to 18,358.11, 25,312.01 and 15,520.48 is: 21,399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.11 : 25,312.01 = 15,520.48 : x
  2. Step 2: Convert to fraction form
    18,358.11/25,312.01 = 15,520.48/x
  3. Step 3: Cross multiply
    18,358.11x = 25,312.01 × 15,520.48
  4. Step 4: Simplify right side
    18,358.11x = 392,854,520.49
  5. Step 5: Solve for x
    x = 392,854,520.49/18,358.11
  6. Step 6: Final answer
    x = 21,399.51

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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.