Home / 15,143.24-20,897.36-9,481.11

Finding the Fourth Proportional to 15,143.24, 20,897.36 and 9,481.11

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Solution

The fourth proportional to 15,143.24, 20,897.36 and 9,481.11 is: 13,083.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.24 : 20,897.36 = 9,481.11 : x
  2. Step 2: Convert to fraction form
    15,143.24/20,897.36 = 9,481.11/x
  3. Step 3: Cross multiply
    15,143.24x = 20,897.36 × 9,481.11
  4. Step 4: Simplify right side
    15,143.24x = 198,130,064.38
  5. Step 5: Solve for x
    x = 198,130,064.38/15,143.24
  6. Step 6: Final answer
    x = 13,083.73

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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.