Home / 18,400.18-25,359.42-15,021.22

Finding the Fourth Proportional to 18,400.18, 25,359.42 and 15,021.22

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Solution

The fourth proportional to 18,400.18, 25,359.42 and 15,021.22 is: 20,702.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.18 : 25,359.42 = 15,021.22 : x
  2. Step 2: Convert to fraction form
    18,400.18/25,359.42 = 15,021.22/x
  3. Step 3: Cross multiply
    18,400.18x = 25,359.42 × 15,021.22
  4. Step 4: Simplify right side
    18,400.18x = 380,929,426.89
  5. Step 5: Solve for x
    x = 380,929,426.89/18,400.18
  6. Step 6: Final answer
    x = 20,702.48

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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.