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Finding the Fourth Proportional to 27,292.80, 40,929.60 and 9,763.20

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Solution

The fourth proportional to 27,292.80, 40,929.60 and 9,763.20 is: 14,641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,292.80 : 40,929.60 = 9,763.20 : x
  2. Step 2: Convert to fraction form
    27,292.80/40,929.60 = 9,763.20/x
  3. Step 3: Cross multiply
    27,292.80x = 40,929.60 × 9,763.20
  4. Step 4: Simplify right side
    27,292.80x = 399,603,870.72
  5. Step 5: Solve for x
    x = 399,603,870.72/27,292.80
  6. Step 6: Final answer
    x = 14,641.37

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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.