Home / 12,687.60-17,508.45-7,022.26

Finding the Fourth Proportional to 12,687.60, 17,508.45 and 7,022.26

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Solution

The fourth proportional to 12,687.60, 17,508.45 and 7,022.26 is: 9,690.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.60 : 17,508.45 = 7,022.26 : x
  2. Step 2: Convert to fraction form
    12,687.60/17,508.45 = 7,022.26/x
  3. Step 3: Cross multiply
    12,687.60x = 17,508.45 × 7,022.26
  4. Step 4: Simplify right side
    12,687.60x = 122,948,888.10
  5. Step 5: Solve for x
    x = 122,948,888.10/12,687.60
  6. Step 6: Final answer
    x = 9,690.48

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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.