Home / 28,765.92-43,140.96-18,220.12

Finding the Fourth Proportional to 28,765.92, 43,140.96 and 18,220.12

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Solution

The fourth proportional to 28,765.92, 43,140.96 and 18,220.12 is: 27,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.92 : 43,140.96 = 18,220.12 : x
  2. Step 2: Convert to fraction form
    28,765.92/43,140.96 = 18,220.12/x
  3. Step 3: Cross multiply
    28,765.92x = 43,140.96 × 18,220.12
  4. Step 4: Simplify right side
    28,765.92x = 786,033,468.12
  5. Step 5: Solve for x
    x = 786,033,468.12/28,765.92
  6. Step 6: Final answer
    x = 27,325.16

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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.