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Finding the Fourth Proportional to 21,369.53, 32,065.77 and 8,898.17

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Solution

The fourth proportional to 21,369.53, 32,065.77 and 8,898.17 is: 13,352.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.53 : 32,065.77 = 8,898.17 : x
  2. Step 2: Convert to fraction form
    21,369.53/32,065.77 = 8,898.17/x
  3. Step 3: Cross multiply
    21,369.53x = 32,065.77 × 8,898.17
  4. Step 4: Simplify right side
    21,369.53x = 285,326,672.64
  5. Step 5: Solve for x
    x = 285,326,672.64/21,369.53
  6. Step 6: Final answer
    x = 13,352.03

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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.