Home / 12,539.72-17,305.01-7,504.15

Finding the Fourth Proportional to 12,539.72, 17,305.01 and 7,504.15

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Solution

The fourth proportional to 12,539.72, 17,305.01 and 7,504.15 is: 10,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.72 : 17,305.01 = 7,504.15 : x
  2. Step 2: Convert to fraction form
    12,539.72/17,305.01 = 7,504.15/x
  3. Step 3: Cross multiply
    12,539.72x = 17,305.01 × 7,504.15
  4. Step 4: Simplify right side
    12,539.72x = 129,859,353.27
  5. Step 5: Solve for x
    x = 129,859,353.27/12,539.72
  6. Step 6: Final answer
    x = 10,355.85

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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.