Home / 20,189.68-30,285.88-6,864.02

Finding the Fourth Proportional to 20,189.68, 30,285.88 and 6,864.02

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Solution

The fourth proportional to 20,189.68, 30,285.88 and 6,864.02 is: 10,296.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.68 : 30,285.88 = 6,864.02 : x
  2. Step 2: Convert to fraction form
    20,189.68/30,285.88 = 6,864.02/x
  3. Step 3: Cross multiply
    20,189.68x = 30,285.88 × 6,864.02
  4. Step 4: Simplify right side
    20,189.68x = 207,882,886.04
  5. Step 5: Solve for x
    x = 207,882,886.04/20,189.68
  6. Step 6: Final answer
    x = 10,296.49

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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.