Home / 28,247.78-42,371.40-17,157.54

Finding the Fourth Proportional to 28,247.78, 42,371.40 and 17,157.54

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Solution

The fourth proportional to 28,247.78, 42,371.40 and 17,157.54 is: 25,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.78 : 42,371.40 = 17,157.54 : x
  2. Step 2: Convert to fraction form
    28,247.78/42,371.40 = 17,157.54/x
  3. Step 3: Cross multiply
    28,247.78x = 42,371.40 × 17,157.54
  4. Step 4: Simplify right side
    28,247.78x = 726,988,990.36
  5. Step 5: Solve for x
    x = 726,988,990.36/28,247.78
  6. Step 6: Final answer
    x = 25,736.15

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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.