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Finding the Fourth Proportional to 21,756.84, 32,631.48 and 9,283.92

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Solution

The fourth proportional to 21,756.84, 32,631.48 and 9,283.92 is: 13,924.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.84 : 32,631.48 = 9,283.92 : x
  2. Step 2: Convert to fraction form
    21,756.84/32,631.48 = 9,283.92/x
  3. Step 3: Cross multiply
    21,756.84x = 32,631.48 × 9,283.92
  4. Step 4: Simplify right side
    21,756.84x = 302,948,049.80
  5. Step 5: Solve for x
    x = 302,948,049.80/21,756.84
  6. Step 6: Final answer
    x = 13,924.27

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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.