Home / 20,126.94-30,190.43-6,979.32

Finding the Fourth Proportional to 20,126.94, 30,190.43 and 6,979.32

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Solution

The fourth proportional to 20,126.94, 30,190.43 and 6,979.32 is: 10,468.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.94 : 30,190.43 = 6,979.32 : x
  2. Step 2: Convert to fraction form
    20,126.94/30,190.43 = 6,979.32/x
  3. Step 3: Cross multiply
    20,126.94x = 30,190.43 × 6,979.32
  4. Step 4: Simplify right side
    20,126.94x = 210,708,637.01
  5. Step 5: Solve for x
    x = 210,708,637.01/20,126.94
  6. Step 6: Final answer
    x = 10,468.99

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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.