Home / 21,358.11-29,452.12-18,343.22

Finding the Fourth Proportional to 21,358.11, 29,452.12 and 18,343.22

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Solution

The fourth proportional to 21,358.11, 29,452.12 and 18,343.22 is: 25,294.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.11 : 29,452.12 = 18,343.22 : x
  2. Step 2: Convert to fraction form
    21,358.11/29,452.12 = 18,343.22/x
  3. Step 3: Cross multiply
    21,358.11x = 29,452.12 × 18,343.22
  4. Step 4: Simplify right side
    21,358.11x = 540,246,707.75
  5. Step 5: Solve for x
    x = 540,246,707.75/21,358.11
  6. Step 6: Final answer
    x = 25,294.68

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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.