Home / 18,315.44-25,278.30-15,330.19

Finding the Fourth Proportional to 18,315.44, 25,278.30 and 15,330.19

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Solution

The fourth proportional to 18,315.44, 25,278.30 and 15,330.19 is: 21,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.44 : 25,278.30 = 15,330.19 : x
  2. Step 2: Convert to fraction form
    18,315.44/25,278.30 = 15,330.19/x
  3. Step 3: Cross multiply
    18,315.44x = 25,278.30 × 15,330.19
  4. Step 4: Simplify right side
    18,315.44x = 387,521,098.10
  5. Step 5: Solve for x
    x = 387,521,098.10/18,315.44
  6. Step 6: Final answer
    x = 21,158.16

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Double scale
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Similar ratio
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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.