Home / 27,172.20-40,743.90-9,642.60

Finding the Fourth Proportional to 27,172.20, 40,743.90 and 9,642.60

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Solution

The fourth proportional to 27,172.20, 40,743.90 and 9,642.60 is: 14,458.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,172.20 : 40,743.90 = 9,642.60 : x
  2. Step 2: Convert to fraction form
    27,172.20/40,743.90 = 9,642.60/x
  3. Step 3: Cross multiply
    27,172.20x = 40,743.90 × 9,642.60
  4. Step 4: Simplify right side
    27,172.20x = 392,877,130.14
  5. Step 5: Solve for x
    x = 392,877,130.14/27,172.20
  6. Step 6: Final answer
    x = 14,458.79

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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.