Home / 18,320.12-25,282.40-11,245.20

Finding the Fourth Proportional to 18,320.12, 25,282.40 and 11,245.20

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Solution

The fourth proportional to 18,320.12, 25,282.40 and 11,245.20 is: 15,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.12 : 25,282.40 = 11,245.20 : x
  2. Step 2: Convert to fraction form
    18,320.12/25,282.40 = 11,245.20/x
  3. Step 3: Cross multiply
    18,320.12x = 25,282.40 × 11,245.20
  4. Step 4: Simplify right side
    18,320.12x = 284,305,644.48
  5. Step 5: Solve for x
    x = 284,305,644.48/18,320.12
  6. Step 6: Final answer
    x = 15,518.77

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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.