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Finding the Fourth Proportional to 10,955.72, 16,437.64 and 7,860.44

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Solution

The fourth proportional to 10,955.72, 16,437.64 and 7,860.44 is: 11,793.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.72 : 16,437.64 = 7,860.44 : x
  2. Step 2: Convert to fraction form
    10,955.72/16,437.64 = 7,860.44/x
  3. Step 3: Cross multiply
    10,955.72x = 16,437.64 × 7,860.44
  4. Step 4: Simplify right side
    10,955.72x = 129,207,082.96
  5. Step 5: Solve for x
    x = 129,207,082.96/10,955.72
  6. Step 6: Final answer
    x = 11,793.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.