Home / 10,120.67-15,080.40-9,016.55

Finding the Fourth Proportional to 10,120.67, 15,080.40 and 9,016.55

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Solution

The fourth proportional to 10,120.67, 15,080.40 and 9,016.55 is: 13,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.67 : 15,080.40 = 9,016.55 : x
  2. Step 2: Convert to fraction form
    10,120.67/15,080.40 = 9,016.55/x
  3. Step 3: Cross multiply
    10,120.67x = 15,080.40 × 9,016.55
  4. Step 4: Simplify right side
    10,120.67x = 135,973,135.54
  5. Step 5: Solve for x
    x = 135,973,135.54/10,120.67
  6. Step 6: Final answer
    x = 13,435.19

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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.