Home / 11,006.39-15,187.20-6,289.76

Finding the Fourth Proportional to 11,006.39, 15,187.20 and 6,289.76

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Solution

The fourth proportional to 11,006.39, 15,187.20 and 6,289.76 is: 8,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,006.39 : 15,187.20 = 6,289.76 : x
  2. Step 2: Convert to fraction form
    11,006.39/15,187.20 = 6,289.76/x
  3. Step 3: Cross multiply
    11,006.39x = 15,187.20 × 6,289.76
  4. Step 4: Simplify right side
    11,006.39x = 95,523,767.14
  5. Step 5: Solve for x
    x = 95,523,767.14/11,006.39
  6. Step 6: Final answer
    x = 8,678.94

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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.