Home / 11,947.83-16,487.87-6,642.53

Finding the Fourth Proportional to 11,947.83, 16,487.87 and 6,642.53

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Solution

The fourth proportional to 11,947.83, 16,487.87 and 6,642.53 is: 9,166.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.83 : 16,487.87 = 6,642.53 : x
  2. Step 2: Convert to fraction form
    11,947.83/16,487.87 = 6,642.53/x
  3. Step 3: Cross multiply
    11,947.83x = 16,487.87 × 6,642.53
  4. Step 4: Simplify right side
    11,947.83x = 109,521,055.46
  5. Step 5: Solve for x
    x = 109,521,055.46/11,947.83
  6. Step 6: Final answer
    x = 9,166.61

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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.