Home / 13,291.20-19,927.20-7,449.60

Finding the Fourth Proportional to 13,291.20, 19,927.20 and 7,449.60

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Solution

The fourth proportional to 13,291.20, 19,927.20 and 7,449.60 is: 11,169.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.20 : 19,927.20 = 7,449.60 : x
  2. Step 2: Convert to fraction form
    13,291.20/19,927.20 = 7,449.60/x
  3. Step 3: Cross multiply
    13,291.20x = 19,927.20 × 7,449.60
  4. Step 4: Simplify right side
    13,291.20x = 148,449,669.12
  5. Step 5: Solve for x
    x = 148,449,669.12/13,291.20
  6. Step 6: Final answer
    x = 11,169.02

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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.