Home / 18,905.62-28,344.51-6,422.28

Finding the Fourth Proportional to 18,905.62, 28,344.51 and 6,422.28

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Solution

The fourth proportional to 18,905.62, 28,344.51 and 6,422.28 is: 9,628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.62 : 28,344.51 = 6,422.28 : x
  2. Step 2: Convert to fraction form
    18,905.62/28,344.51 = 6,422.28/x
  3. Step 3: Cross multiply
    18,905.62x = 28,344.51 × 6,422.28
  4. Step 4: Simplify right side
    18,905.62x = 182,036,379.68
  5. Step 5: Solve for x
    x = 182,036,379.68/18,905.62
  6. Step 6: Final answer
    x = 9,628.69

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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.