Home / 15,913.47-21,960.62-8,839.90

Finding the Fourth Proportional to 15,913.47, 21,960.62 and 8,839.90

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Solution

The fourth proportional to 15,913.47, 21,960.62 and 8,839.90 is: 12,199.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.47 : 21,960.62 = 8,839.90 : x
  2. Step 2: Convert to fraction form
    15,913.47/21,960.62 = 8,839.90/x
  3. Step 3: Cross multiply
    15,913.47x = 21,960.62 × 8,839.90
  4. Step 4: Simplify right side
    15,913.47x = 194,129,651.94
  5. Step 5: Solve for x
    x = 194,129,651.94/15,913.47
  6. Step 6: Final answer
    x = 12,199.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.