Home / 22,342.05-30,823.45-12,780

Finding the Fourth Proportional to 22,342.05, 30,823.45 and 12,780

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Solution

The fourth proportional to 22,342.05, 30,823.45 and 12,780 is: 17,631.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,342.05 : 30,823.45 = 12,780 : x
  2. Step 2: Convert to fraction form
    22,342.05/30,823.45 = 12,780/x
  3. Step 3: Cross multiply
    22,342.05x = 30,823.45 × 12,780
  4. Step 4: Simplify right side
    22,342.05x = 393,923,691
  5. Step 5: Solve for x
    x = 393,923,691/22,342.05
  6. Step 6: Final answer
    x = 17,631.49

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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.