Home / 39,515.30-54,531.12-21,610.34

Finding the Fourth Proportional to 39,515.30, 54,531.12 and 21,610.34

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Solution

The fourth proportional to 39,515.30, 54,531.12 and 21,610.34 is: 29,822.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,515.30 : 54,531.12 = 21,610.34 : x
  2. Step 2: Convert to fraction form
    39,515.30/54,531.12 = 21,610.34/x
  3. Step 3: Cross multiply
    39,515.30x = 54,531.12 × 21,610.34
  4. Step 4: Simplify right side
    39,515.30x = 1,178,436,043.78
  5. Step 5: Solve for x
    x = 1,178,436,043.78/39,515.30
  6. Step 6: Final answer
    x = 29,822.27

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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.