Home / 12,330.06-18,493.83-6,781.56

Finding the Fourth Proportional to 12,330.06, 18,493.83 and 6,781.56

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Solution

The fourth proportional to 12,330.06, 18,493.83 and 6,781.56 is: 10,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.06 : 18,493.83 = 6,781.56 : x
  2. Step 2: Convert to fraction form
    12,330.06/18,493.83 = 6,781.56/x
  3. Step 3: Cross multiply
    12,330.06x = 18,493.83 × 6,781.56
  4. Step 4: Simplify right side
    12,330.06x = 125,417,017.77
  5. Step 5: Solve for x
    x = 125,417,017.77/12,330.06
  6. Step 6: Final answer
    x = 10,171.65

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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.