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Finding the Fourth Proportional to 22,248, 33,378.66 and 12,885.84

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Solution

The fourth proportional to 22,248, 33,378.66 and 12,885.84 is: 19,332.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,248 : 33,378.66 = 12,885.84 : x
  2. Step 2: Convert to fraction form
    22,248/33,378.66 = 12,885.84/x
  3. Step 3: Cross multiply
    22,248x = 33,378.66 × 12,885.84
  4. Step 4: Simplify right side
    22,248x = 430,112,072.17
  5. Step 5: Solve for x
    x = 430,112,072.17/22,248
  6. Step 6: Final answer
    x = 19,332.62

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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.