Home / 12,793.41-17,656.20-7,129.08

Finding the Fourth Proportional to 12,793.41, 17,656.20 and 7,129.08

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Solution

The fourth proportional to 12,793.41, 17,656.20 and 7,129.08 is: 9,838.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,793.41 : 17,656.20 = 7,129.08 : x
  2. Step 2: Convert to fraction form
    12,793.41/17,656.20 = 7,129.08/x
  3. Step 3: Cross multiply
    12,793.41x = 17,656.20 × 7,129.08
  4. Step 4: Simplify right side
    12,793.41x = 125,872,462.30
  5. Step 5: Solve for x
    x = 125,872,462.30/12,793.41
  6. Step 6: Final answer
    x = 9,838.85

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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.