Home / 21,961.16-30,298.74-15,245

Finding the Fourth Proportional to 21,961.16, 30,298.74 and 15,245

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Solution

The fourth proportional to 21,961.16, 30,298.74 and 15,245 is: 21,032.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.16 : 30,298.74 = 15,245 : x
  2. Step 2: Convert to fraction form
    21,961.16/30,298.74 = 15,245/x
  3. Step 3: Cross multiply
    21,961.16x = 30,298.74 × 15,245
  4. Step 4: Simplify right side
    21,961.16x = 461,904,291.30
  5. Step 5: Solve for x
    x = 461,904,291.30/21,961.16
  6. Step 6: Final answer
    x = 21,032.78

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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.