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Finding the Fourth Proportional to 21,363.93, 32,033.07 and 8,868.87

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Solution

The fourth proportional to 21,363.93, 32,033.07 and 8,868.87 is: 13,297.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.93 : 32,033.07 = 8,868.87 : x
  2. Step 2: Convert to fraction form
    21,363.93/32,033.07 = 8,868.87/x
  3. Step 3: Cross multiply
    21,363.93x = 32,033.07 × 8,868.87
  4. Step 4: Simplify right side
    21,363.93x = 284,097,089.19
  5. Step 5: Solve for x
    x = 284,097,089.19/21,363.93
  6. Step 6: Final answer
    x = 13,297.98

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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.