Home / 15,512.14-21,406.98-9,540.28

Finding the Fourth Proportional to 15,512.14, 21,406.98 and 9,540.28

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Solution

The fourth proportional to 15,512.14, 21,406.98 and 9,540.28 is: 13,165.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.14 : 21,406.98 = 9,540.28 : x
  2. Step 2: Convert to fraction form
    15,512.14/21,406.98 = 9,540.28/x
  3. Step 3: Cross multiply
    15,512.14x = 21,406.98 × 9,540.28
  4. Step 4: Simplify right side
    15,512.14x = 204,228,583.15
  5. Step 5: Solve for x
    x = 204,228,583.15/15,512.14
  6. Step 6: Final answer
    x = 13,165.73

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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.