Home / 28,399.32-42,627.43-11,769.12

Finding the Fourth Proportional to 28,399.32, 42,627.43 and 11,769.12

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Solution

The fourth proportional to 28,399.32, 42,627.43 and 11,769.12 is: 17,665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.32 : 42,627.43 = 11,769.12 : x
  2. Step 2: Convert to fraction form
    28,399.32/42,627.43 = 11,769.12/x
  3. Step 3: Cross multiply
    28,399.32x = 42,627.43 × 11,769.12
  4. Step 4: Simplify right side
    28,399.32x = 501,687,338.96
  5. Step 5: Solve for x
    x = 501,687,338.96/28,399.32
  6. Step 6: Final answer
    x = 17,665.47

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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.