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Finding the Fourth Proportional to 27,172.63, 40,765.08 and 9,642.46

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Solution

The fourth proportional to 27,172.63, 40,765.08 and 9,642.46 is: 14,465.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,172.63 : 40,765.08 = 9,642.46 : x
  2. Step 2: Convert to fraction form
    27,172.63/40,765.08 = 9,642.46/x
  3. Step 3: Cross multiply
    27,172.63x = 40,765.08 × 9,642.46
  4. Step 4: Simplify right side
    27,172.63x = 393,075,653.30
  5. Step 5: Solve for x
    x = 393,075,653.30/27,172.63
  6. Step 6: Final answer
    x = 14,465.87

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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.