Home / 21,986.18-32,988.48-9,499.78

Finding the Fourth Proportional to 21,986.18, 32,988.48 and 9,499.78

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Solution

The fourth proportional to 21,986.18, 32,988.48 and 9,499.78 is: 14,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.18 : 32,988.48 = 9,499.78 : x
  2. Step 2: Convert to fraction form
    21,986.18/32,988.48 = 9,499.78/x
  3. Step 3: Cross multiply
    21,986.18x = 32,988.48 × 9,499.78
  4. Step 4: Simplify right side
    21,986.18x = 313,383,302.53
  5. Step 5: Solve for x
    x = 313,383,302.53/21,986.18
  6. Step 6: Final answer
    x = 14,253.65

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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.