Home / 12,330.87-17,019.77-7,612.44

Finding the Fourth Proportional to 12,330.87, 17,019.77 and 7,612.44

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Solution

The fourth proportional to 12,330.87, 17,019.77 and 7,612.44 is: 10,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.87 : 17,019.77 = 7,612.44 : x
  2. Step 2: Convert to fraction form
    12,330.87/17,019.77 = 7,612.44/x
  3. Step 3: Cross multiply
    12,330.87x = 17,019.77 × 7,612.44
  4. Step 4: Simplify right side
    12,330.87x = 129,561,939.88
  5. Step 5: Solve for x
    x = 129,561,939.88/12,330.87
  6. Step 6: Final answer
    x = 10,507.12

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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.