Home / 15,979.20-22,051.08-8,905.92

Finding the Fourth Proportional to 15,979.20, 22,051.08 and 8,905.92

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Solution

The fourth proportional to 15,979.20, 22,051.08 and 8,905.92 is: 12,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.20 : 22,051.08 = 8,905.92 : x
  2. Step 2: Convert to fraction form
    15,979.20/22,051.08 = 8,905.92/x
  3. Step 3: Cross multiply
    15,979.20x = 22,051.08 × 8,905.92
  4. Step 4: Simplify right side
    15,979.20x = 196,385,154.39
  5. Step 5: Solve for x
    x = 196,385,154.39/15,979.20
  6. Step 6: Final answer
    x = 12,290.05

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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.