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Finding the Fourth Proportional to 15,443.78, 23,168.88 and 6,209.78

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Solution

The fourth proportional to 15,443.78, 23,168.88 and 6,209.78 is: 9,315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.78 : 23,168.88 = 6,209.78 : x
  2. Step 2: Convert to fraction form
    15,443.78/23,168.88 = 6,209.78/x
  3. Step 3: Cross multiply
    15,443.78x = 23,168.88 × 6,209.78
  4. Step 4: Simplify right side
    15,443.78x = 143,873,647.65
  5. Step 5: Solve for x
    x = 143,873,647.65/15,443.78
  6. Step 6: Final answer
    x = 9,315.96

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1.5x scale

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.