Home / 15,439.44-21,306.42-8,365.80

Finding the Fourth Proportional to 15,439.44, 21,306.42 and 8,365.80

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Solution

The fourth proportional to 15,439.44, 21,306.42 and 8,365.80 is: 11,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.44 : 21,306.42 = 8,365.80 : x
  2. Step 2: Convert to fraction form
    15,439.44/21,306.42 = 8,365.80/x
  3. Step 3: Cross multiply
    15,439.44x = 21,306.42 × 8,365.80
  4. Step 4: Simplify right side
    15,439.44x = 178,245,248.44
  5. Step 5: Solve for x
    x = 178,245,248.44/15,439.44
  6. Step 6: Final answer
    x = 11,544.80

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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.