Home / 13,178.13-19,778.88-6,161.96

Finding the Fourth Proportional to 13,178.13, 19,778.88 and 6,161.96

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Solution

The fourth proportional to 13,178.13, 19,778.88 and 6,161.96 is: 9,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.13 : 19,778.88 = 6,161.96 : x
  2. Step 2: Convert to fraction form
    13,178.13/19,778.88 = 6,161.96/x
  3. Step 3: Cross multiply
    13,178.13x = 19,778.88 × 6,161.96
  4. Step 4: Simplify right side
    13,178.13x = 121,876,628.70
  5. Step 5: Solve for x
    x = 121,876,628.70/13,178.13
  6. Step 6: Final answer
    x = 9,248.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.