Home / 21,740.30-32,544.80-19,661.28

Finding the Fourth Proportional to 21,740.30, 32,544.80 and 19,661.28

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Solution

The fourth proportional to 21,740.30, 32,544.80 and 19,661.28 is: 29,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.30 : 32,544.80 = 19,661.28 : x
  2. Step 2: Convert to fraction form
    21,740.30/32,544.80 = 19,661.28/x
  3. Step 3: Cross multiply
    21,740.30x = 32,544.80 × 19,661.28
  4. Step 4: Simplify right side
    21,740.30x = 639,872,489.44
  5. Step 5: Solve for x
    x = 639,872,489.44/21,740.30
  6. Step 6: Final answer
    x = 29,432.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.