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Finding the Fourth Proportional to 21,252.68, 31,868.04 and 9,555.92

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Solution

The fourth proportional to 21,252.68, 31,868.04 and 9,555.92 is: 14,328.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.68 : 31,868.04 = 9,555.92 : x
  2. Step 2: Convert to fraction form
    21,252.68/31,868.04 = 9,555.92/x
  3. Step 3: Cross multiply
    21,252.68x = 31,868.04 × 9,555.92
  4. Step 4: Simplify right side
    21,252.68x = 304,528,440.80
  5. Step 5: Solve for x
    x = 304,528,440.80/21,252.68
  6. Step 6: Final answer
    x = 14,328.94

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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.