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Finding the Fourth Proportional to 10,703.10, 16,134.87 and 9,989.49

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Solution

The fourth proportional to 10,703.10, 16,134.87 and 9,989.49 is: 15,059.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,703.10 : 16,134.87 = 9,989.49 : x
  2. Step 2: Convert to fraction form
    10,703.10/16,134.87 = 9,989.49/x
  3. Step 3: Cross multiply
    10,703.10x = 16,134.87 × 9,989.49
  4. Step 4: Simplify right side
    10,703.10x = 161,179,122.52
  5. Step 5: Solve for x
    x = 161,179,122.52/10,703.10
  6. Step 6: Final answer
    x = 15,059.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.