Home / 39,420.83-54,401.92-21,517.00

Finding the Fourth Proportional to 39,420.83, 54,401.92 and 21,517.00

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Solution

The fourth proportional to 39,420.83, 54,401.92 and 21,517.00 is: 29,694.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,420.83 : 54,401.92 = 21,517.00 : x
  2. Step 2: Convert to fraction form
    39,420.83/54,401.92 = 21,517.00/x
  3. Step 3: Cross multiply
    39,420.83x = 54,401.92 × 21,517.00
  4. Step 4: Simplify right side
    39,420.83x = 1,170,565,922.84
  5. Step 5: Solve for x
    x = 1,170,565,922.84/39,420.83
  6. Step 6: Final answer
    x = 29,694.09

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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.