Home / 18,462.40-25,490.30-11,399.20

Finding the Fourth Proportional to 18,462.40, 25,490.30 and 11,399.20

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Solution

The fourth proportional to 18,462.40, 25,490.30 and 11,399.20 is: 15,738.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.40 : 25,490.30 = 11,399.20 : x
  2. Step 2: Convert to fraction form
    18,462.40/25,490.30 = 11,399.20/x
  3. Step 3: Cross multiply
    18,462.40x = 25,490.30 × 11,399.20
  4. Step 4: Simplify right side
    18,462.40x = 290,569,027.76
  5. Step 5: Solve for x
    x = 290,569,027.76/18,462.40
  6. Step 6: Final answer
    x = 15,738.42

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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.