Home / 20,126.43-30,176.79-6,979.74

Finding the Fourth Proportional to 20,126.43, 30,176.79 and 6,979.74

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Solution

The fourth proportional to 20,126.43, 30,176.79 and 6,979.74 is: 10,465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.43 : 30,176.79 = 6,979.74 : x
  2. Step 2: Convert to fraction form
    20,126.43/30,176.79 = 6,979.74/x
  3. Step 3: Cross multiply
    20,126.43x = 30,176.79 × 6,979.74
  4. Step 4: Simplify right side
    20,126.43x = 210,626,148.23
  5. Step 5: Solve for x
    x = 210,626,148.23/20,126.43
  6. Step 6: Final answer
    x = 10,465.15

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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.