Home / 18,856.05-28,287.71-6,378.11

Finding the Fourth Proportional to 18,856.05, 28,287.71 and 6,378.11

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Solution

The fourth proportional to 18,856.05, 28,287.71 and 6,378.11 is: 9,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,856.05 : 28,287.71 = 6,378.11 : x
  2. Step 2: Convert to fraction form
    18,856.05/28,287.71 = 6,378.11/x
  3. Step 3: Cross multiply
    18,856.05x = 28,287.71 × 6,378.11
  4. Step 4: Simplify right side
    18,856.05x = 180,422,126.03
  5. Step 5: Solve for x
    x = 180,422,126.03/18,856.05
  6. Step 6: Final answer
    x = 9,568.39

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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.