Home / 11,947.54-16,487.67-6,642.85

Finding the Fourth Proportional to 11,947.54, 16,487.67 and 6,642.85

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Solution

The fourth proportional to 11,947.54, 16,487.67 and 6,642.85 is: 9,167.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.54 : 16,487.67 = 6,642.85 : x
  2. Step 2: Convert to fraction form
    11,947.54/16,487.67 = 6,642.85/x
  3. Step 3: Cross multiply
    11,947.54x = 16,487.67 × 6,642.85
  4. Step 4: Simplify right side
    11,947.54x = 109,525,118.66
  5. Step 5: Solve for x
    x = 109,525,118.66/11,947.54
  6. Step 6: Final answer
    x = 9,167.17

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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.