Home / 21,810.28-32,690.88-9,324.04

Finding the Fourth Proportional to 21,810.28, 32,690.88 and 9,324.04

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Solution

The fourth proportional to 21,810.28, 32,690.88 and 9,324.04 is: 13,975.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,810.28 : 32,690.88 = 9,324.04 : x
  2. Step 2: Convert to fraction form
    21,810.28/32,690.88 = 9,324.04/x
  3. Step 3: Cross multiply
    21,810.28x = 32,690.88 × 9,324.04
  4. Step 4: Simplify right side
    21,810.28x = 304,811,072.76
  5. Step 5: Solve for x
    x = 304,811,072.76/21,810.28
  6. Step 6: Final answer
    x = 13,975.57

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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.