Home / 39,417.18-54,396.40-21,512.34

Finding the Fourth Proportional to 39,417.18, 54,396.40 and 21,512.34

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Solution

The fourth proportional to 39,417.18, 54,396.40 and 21,512.34 is: 29,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.18 : 54,396.40 = 21,512.34 : x
  2. Step 2: Convert to fraction form
    39,417.18/54,396.40 = 21,512.34/x
  3. Step 3: Cross multiply
    39,417.18x = 54,396.40 × 21,512.34
  4. Step 4: Simplify right side
    39,417.18x = 1,170,193,851.58
  5. Step 5: Solve for x
    x = 1,170,193,851.58/39,417.18
  6. Step 6: Final answer
    x = 29,687.41

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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.