Home / 13,116.11-18,098.87-7,809.89

Finding the Fourth Proportional to 13,116.11, 18,098.87 and 7,809.89

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Solution

The fourth proportional to 13,116.11, 18,098.87 and 7,809.89 is: 10,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.11 : 18,098.87 = 7,809.89 : x
  2. Step 2: Convert to fraction form
    13,116.11/18,098.87 = 7,809.89/x
  3. Step 3: Cross multiply
    13,116.11x = 18,098.87 × 7,809.89
  4. Step 4: Simplify right side
    13,116.11x = 141,350,054.28
  5. Step 5: Solve for x
    x = 141,350,054.28/13,116.11
  6. Step 6: Final answer
    x = 10,776.83

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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.