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Finding the Fourth Proportional to 21,657.88, 32,499.78 and 19,895.32

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Solution

The fourth proportional to 21,657.88, 32,499.78 and 19,895.32 is: 29,854.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.88 : 32,499.78 = 19,895.32 : x
  2. Step 2: Convert to fraction form
    21,657.88/32,499.78 = 19,895.32/x
  3. Step 3: Cross multiply
    21,657.88x = 32,499.78 × 19,895.32
  4. Step 4: Simplify right side
    21,657.88x = 646,593,523.03
  5. Step 5: Solve for x
    x = 646,593,523.03/21,657.88
  6. Step 6: Final answer
    x = 29,854.89

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