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Finding the Fourth Proportional to 27,990, 41,985.36 and 9,522

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Solution

The fourth proportional to 27,990, 41,985.36 and 9,522 is: 14,283.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990 : 41,985.36 = 9,522 : x
  2. Step 2: Convert to fraction form
    27,990/41,985.36 = 9,522/x
  3. Step 3: Cross multiply
    27,990x = 41,985.36 × 9,522
  4. Step 4: Simplify right side
    27,990x = 399,784,597.92
  5. Step 5: Solve for x
    x = 399,784,597.92/27,990
  6. Step 6: Final answer
    x = 14,283.12

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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.