Home / 12,399.10-17,117.43-9,560.25

Finding the Fourth Proportional to 12,399.10, 17,117.43 and 9,560.25

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Solution

The fourth proportional to 12,399.10, 17,117.43 and 9,560.25 is: 13,198.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.10 : 17,117.43 = 9,560.25 : x
  2. Step 2: Convert to fraction form
    12,399.10/17,117.43 = 9,560.25/x
  3. Step 3: Cross multiply
    12,399.10x = 17,117.43 × 9,560.25
  4. Step 4: Simplify right side
    12,399.10x = 163,646,910.16
  5. Step 5: Solve for x
    x = 163,646,910.16/12,399.10
  6. Step 6: Final answer
    x = 13,198.29

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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.