Home / 11,699.28-16,134.30-9,147.39

Finding the Fourth Proportional to 11,699.28, 16,134.30 and 9,147.39

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Solution

The fourth proportional to 11,699.28, 16,134.30 and 9,147.39 is: 12,615.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,699.28 : 16,134.30 = 9,147.39 : x
  2. Step 2: Convert to fraction form
    11,699.28/16,134.30 = 9,147.39/x
  3. Step 3: Cross multiply
    11,699.28x = 16,134.30 × 9,147.39
  4. Step 4: Simplify right side
    11,699.28x = 147,586,734.48
  5. Step 5: Solve for x
    x = 147,586,734.48/11,699.28
  6. Step 6: Final answer
    x = 12,615.03

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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.