Home / 39,306.10-54,243.56-21,401.42

Finding the Fourth Proportional to 39,306.10, 54,243.56 and 21,401.42

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Solution

The fourth proportional to 39,306.10, 54,243.56 and 21,401.42 is: 29,534.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,306.10 : 54,243.56 = 21,401.42 : x
  2. Step 2: Convert to fraction form
    39,306.10/54,243.56 = 21,401.42/x
  3. Step 3: Cross multiply
    39,306.10x = 54,243.56 × 21,401.42
  4. Step 4: Simplify right side
    39,306.10x = 1,160,889,209.86
  5. Step 5: Solve for x
    x = 1,160,889,209.86/39,306.10
  6. Step 6: Final answer
    x = 29,534.58

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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.