Home / 11,487.11-17,152.85-9,120.56

Finding the Fourth Proportional to 11,487.11, 17,152.85 and 9,120.56

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Solution

The fourth proportional to 11,487.11, 17,152.85 and 9,120.56 is: 13,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.11 : 17,152.85 = 9,120.56 : x
  2. Step 2: Convert to fraction form
    11,487.11/17,152.85 = 9,120.56/x
  3. Step 3: Cross multiply
    11,487.11x = 17,152.85 × 9,120.56
  4. Step 4: Simplify right side
    11,487.11x = 156,443,466.23
  5. Step 5: Solve for x
    x = 156,443,466.23/11,487.11
  6. Step 6: Final answer
    x = 13,619.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.