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Finding the Fourth Proportional to 10,781.11, 14,873.70 and 7,955.29

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Solution

The fourth proportional to 10,781.11, 14,873.70 and 7,955.29 is: 10,975.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.11 : 14,873.70 = 7,955.29 : x
  2. Step 2: Convert to fraction form
    10,781.11/14,873.70 = 7,955.29/x
  3. Step 3: Cross multiply
    10,781.11x = 14,873.70 × 7,955.29
  4. Step 4: Simplify right side
    10,781.11x = 118,324,596.87
  5. Step 5: Solve for x
    x = 118,324,596.87/10,781.11
  6. Step 6: Final answer
    x = 10,975.18

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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.