Home / 21,756.96-32,618.28-9,279

Finding the Fourth Proportional to 21,756.96, 32,618.28 and 9,279

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Solution

The fourth proportional to 21,756.96, 32,618.28 and 9,279 is: 13,911.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.96 : 32,618.28 = 9,279 : x
  2. Step 2: Convert to fraction form
    21,756.96/32,618.28 = 9,279/x
  3. Step 3: Cross multiply
    21,756.96x = 32,618.28 × 9,279
  4. Step 4: Simplify right side
    21,756.96x = 302,665,020.12
  5. Step 5: Solve for x
    x = 302,665,020.12/21,756.96
  6. Step 6: Final answer
    x = 13,911.18

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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.