Home / 13,020.28-17,957.16-8,540.60

Finding the Fourth Proportional to 13,020.28, 17,957.16 and 8,540.60

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Solution

The fourth proportional to 13,020.28, 17,957.16 and 8,540.60 is: 11,778.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.28 : 17,957.16 = 8,540.60 : x
  2. Step 2: Convert to fraction form
    13,020.28/17,957.16 = 8,540.60/x
  3. Step 3: Cross multiply
    13,020.28x = 17,957.16 × 8,540.60
  4. Step 4: Simplify right side
    13,020.28x = 153,364,920.70
  5. Step 5: Solve for x
    x = 153,364,920.70/13,020.28
  6. Step 6: Final answer
    x = 11,778.93

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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.