Home / 20,130.67-30,188.44-6,979.87

Finding the Fourth Proportional to 20,130.67, 30,188.44 and 6,979.87

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Solution

The fourth proportional to 20,130.67, 30,188.44 and 6,979.87 is: 10,467.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.67 : 30,188.44 = 6,979.87 : x
  2. Step 2: Convert to fraction form
    20,130.67/30,188.44 = 6,979.87/x
  3. Step 3: Cross multiply
    20,130.67x = 30,188.44 × 6,979.87
  4. Step 4: Simplify right side
    20,130.67x = 210,711,218.31
  5. Step 5: Solve for x
    x = 210,711,218.31/20,130.67
  6. Step 6: Final answer
    x = 10,467.18

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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.