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Finding the Fourth Proportional to 27,988.88, 41,983.31 and 9,520.88

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Solution

The fourth proportional to 27,988.88, 41,983.31 and 9,520.88 is: 14,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.88 : 41,983.31 = 9,520.88 : x
  2. Step 2: Convert to fraction form
    27,988.88/41,983.31 = 9,520.88/x
  3. Step 3: Cross multiply
    27,988.88x = 41,983.31 × 9,520.88
  4. Step 4: Simplify right side
    27,988.88x = 399,717,870.40
  5. Step 5: Solve for x
    x = 399,717,870.40/27,988.88
  6. Step 6: Final answer
    x = 14,281.31

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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.