Home / 15,113.36-20,849.64-8,822

Finding the Fourth Proportional to 15,113.36, 20,849.64 and 8,822

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Solution

The fourth proportional to 15,113.36, 20,849.64 and 8,822 is: 12,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.36 : 20,849.64 = 8,822 : x
  2. Step 2: Convert to fraction form
    15,113.36/20,849.64 = 8,822/x
  3. Step 3: Cross multiply
    15,113.36x = 20,849.64 × 8,822
  4. Step 4: Simplify right side
    15,113.36x = 183,935,524.08
  5. Step 5: Solve for x
    x = 183,935,524.08/15,113.36
  6. Step 6: Final answer
    x = 12,170.39

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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.