Home / 21,882.42-30,218.45-17,438.87

Finding the Fourth Proportional to 21,882.42, 30,218.45 and 17,438.87

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Solution

The fourth proportional to 21,882.42, 30,218.45 and 17,438.87 is: 24,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,882.42 : 30,218.45 = 17,438.87 : x
  2. Step 2: Convert to fraction form
    21,882.42/30,218.45 = 17,438.87/x
  3. Step 3: Cross multiply
    21,882.42x = 30,218.45 × 17,438.87
  4. Step 4: Simplify right side
    21,882.42x = 526,975,382.86
  5. Step 5: Solve for x
    x = 526,975,382.86/21,882.42
  6. Step 6: Final answer
    x = 24,082.13

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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.