Home / 15,979.45-22,052.61-8,905.86

Finding the Fourth Proportional to 15,979.45, 22,052.61 and 8,905.86

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Solution

The fourth proportional to 15,979.45, 22,052.61 and 8,905.86 is: 12,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.45 : 22,052.61 = 8,905.86 : x
  2. Step 2: Convert to fraction form
    15,979.45/22,052.61 = 8,905.86/x
  3. Step 3: Cross multiply
    15,979.45x = 22,052.61 × 8,905.86
  4. Step 4: Simplify right side
    15,979.45x = 196,397,457.29
  5. Step 5: Solve for x
    x = 196,397,457.29/15,979.45
  6. Step 6: Final answer
    x = 12,290.63

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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.