Home / 21,568.32-29,732.40-13,604.40

Finding the Fourth Proportional to 21,568.32, 29,732.40 and 13,604.40

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Solution

The fourth proportional to 21,568.32, 29,732.40 and 13,604.40 is: 18,753.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.32 : 29,732.40 = 13,604.40 : x
  2. Step 2: Convert to fraction form
    21,568.32/29,732.40 = 13,604.40/x
  3. Step 3: Cross multiply
    21,568.32x = 29,732.40 × 13,604.40
  4. Step 4: Simplify right side
    21,568.32x = 404,491,462.56
  5. Step 5: Solve for x
    x = 404,491,462.56/21,568.32
  6. Step 6: Final answer
    x = 18,753.96

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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.