Home / 11,191.98-15,443.69-6,715.92

Finding the Fourth Proportional to 11,191.98, 15,443.69 and 6,715.92

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Solution

The fourth proportional to 11,191.98, 15,443.69 and 6,715.92 is: 9,267.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.98 : 15,443.69 = 6,715.92 : x
  2. Step 2: Convert to fraction form
    11,191.98/15,443.69 = 6,715.92/x
  3. Step 3: Cross multiply
    11,191.98x = 15,443.69 × 6,715.92
  4. Step 4: Simplify right side
    11,191.98x = 103,718,586.54
  5. Step 5: Solve for x
    x = 103,718,586.54/11,191.98
  6. Step 6: Final answer
    x = 9,267.22

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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.