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Finding the Fourth Proportional to 15,980.48, 22,052.96 and 8,906.80

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Solution

The fourth proportional to 15,980.48, 22,052.96 and 8,906.80 is: 12,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.48 : 22,052.96 = 8,906.80 : x
  2. Step 2: Convert to fraction form
    15,980.48/22,052.96 = 8,906.80/x
  3. Step 3: Cross multiply
    15,980.48x = 22,052.96 × 8,906.80
  4. Step 4: Simplify right side
    15,980.48x = 196,421,304.13
  5. Step 5: Solve for x
    x = 196,421,304.13/15,980.48
  6. Step 6: Final answer
    x = 12,291.33

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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.