Home / 12,474.90-17,215.10-7,169.58

Finding the Fourth Proportional to 12,474.90, 17,215.10 and 7,169.58

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Solution

The fourth proportional to 12,474.90, 17,215.10 and 7,169.58 is: 9,893.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.90 : 17,215.10 = 7,169.58 : x
  2. Step 2: Convert to fraction form
    12,474.90/17,215.10 = 7,169.58/x
  3. Step 3: Cross multiply
    12,474.90x = 17,215.10 × 7,169.58
  4. Step 4: Simplify right side
    12,474.90x = 123,425,036.66
  5. Step 5: Solve for x
    x = 123,425,036.66/12,474.90
  6. Step 6: Final answer
    x = 9,893.87

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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.