Home / 15,449.18-21,319.89-8,375.60

Finding the Fourth Proportional to 15,449.18, 21,319.89 and 8,375.60

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Solution

The fourth proportional to 15,449.18, 21,319.89 and 8,375.60 is: 11,558.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.18 : 21,319.89 = 8,375.60 : x
  2. Step 2: Convert to fraction form
    15,449.18/21,319.89 = 8,375.60/x
  3. Step 3: Cross multiply
    15,449.18x = 21,319.89 × 8,375.60
  4. Step 4: Simplify right side
    15,449.18x = 178,566,870.68
  5. Step 5: Solve for x
    x = 178,566,870.68/15,449.18
  6. Step 6: Final answer
    x = 11,558.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.