Home / 13,178.20-18,192.51-8,951.62

Finding the Fourth Proportional to 13,178.20, 18,192.51 and 8,951.62

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Solution

The fourth proportional to 13,178.20, 18,192.51 and 8,951.62 is: 12,357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.20 : 18,192.51 = 8,951.62 : x
  2. Step 2: Convert to fraction form
    13,178.20/18,192.51 = 8,951.62/x
  3. Step 3: Cross multiply
    13,178.20x = 18,192.51 × 8,951.62
  4. Step 4: Simplify right side
    13,178.20x = 162,852,390.88
  5. Step 5: Solve for x
    x = 162,852,390.88/13,178.20
  6. Step 6: Final answer
    x = 12,357.71

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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.