Home / 20,127.58-30,196.78-6,979.96

Finding the Fourth Proportional to 20,127.58, 30,196.78 and 6,979.96

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Solution

The fourth proportional to 20,127.58, 30,196.78 and 6,979.96 is: 10,471.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.58 : 30,196.78 = 6,979.96 : x
  2. Step 2: Convert to fraction form
    20,127.58/30,196.78 = 6,979.96/x
  3. Step 3: Cross multiply
    20,127.58x = 30,196.78 × 6,979.96
  4. Step 4: Simplify right side
    20,127.58x = 210,772,316.53
  5. Step 5: Solve for x
    x = 210,772,316.53/20,127.58
  6. Step 6: Final answer
    x = 10,471.82

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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.