Home / 21,781.64-32,711.26-17,840.36

Finding the Fourth Proportional to 21,781.64, 32,711.26 and 17,840.36

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Solution

The fourth proportional to 21,781.64, 32,711.26 and 17,840.36 is: 26,792.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.64 : 32,711.26 = 17,840.36 : x
  2. Step 2: Convert to fraction form
    21,781.64/32,711.26 = 17,840.36/x
  3. Step 3: Cross multiply
    21,781.64x = 32,711.26 × 17,840.36
  4. Step 4: Simplify right side
    21,781.64x = 583,580,654.45
  5. Step 5: Solve for x
    x = 583,580,654.45/21,781.64
  6. Step 6: Final answer
    x = 26,792.32

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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.