Home / 21,320.32-29,422.16-11,760.54

Finding the Fourth Proportional to 21,320.32, 29,422.16 and 11,760.54

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Solution

The fourth proportional to 21,320.32, 29,422.16 and 11,760.54 is: 16,229.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.32 : 29,422.16 = 11,760.54 : x
  2. Step 2: Convert to fraction form
    21,320.32/29,422.16 = 11,760.54/x
  3. Step 3: Cross multiply
    21,320.32x = 29,422.16 × 11,760.54
  4. Step 4: Simplify right side
    21,320.32x = 346,020,585.20
  5. Step 5: Solve for x
    x = 346,020,585.20/21,320.32
  6. Step 6: Final answer
    x = 16,229.61

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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.