Home / 12,175.20-16,718.40-9,799.20

Finding the Fourth Proportional to 12,175.20, 16,718.40 and 9,799.20

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Solution

The fourth proportional to 12,175.20, 16,718.40 and 9,799.20 is: 13,455.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,175.20 : 16,718.40 = 9,799.20 : x
  2. Step 2: Convert to fraction form
    12,175.20/16,718.40 = 9,799.20/x
  3. Step 3: Cross multiply
    12,175.20x = 16,718.40 × 9,799.20
  4. Step 4: Simplify right side
    12,175.20x = 163,826,945.28
  5. Step 5: Solve for x
    x = 163,826,945.28/12,175.20
  6. Step 6: Final answer
    x = 13,455.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.