Home / 12,338.92-18,491.10-6,486.76

Finding the Fourth Proportional to 12,338.92, 18,491.10 and 6,486.76

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Solution

The fourth proportional to 12,338.92, 18,491.10 and 6,486.76 is: 9,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.92 : 18,491.10 = 6,486.76 : x
  2. Step 2: Convert to fraction form
    12,338.92/18,491.10 = 6,486.76/x
  3. Step 3: Cross multiply
    12,338.92x = 18,491.10 × 6,486.76
  4. Step 4: Simplify right side
    12,338.92x = 119,947,327.84
  5. Step 5: Solve for x
    x = 119,947,327.84/12,338.92
  6. Step 6: Final answer
    x = 9,721.06

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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.