Home / 15,986.72-23,982.55-5,454.28

Finding the Fourth Proportional to 15,986.72, 23,982.55 and 5,454.28

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Solution

The fourth proportional to 15,986.72, 23,982.55 and 5,454.28 is: 8,182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,986.72 : 23,982.55 = 5,454.28 : x
  2. Step 2: Convert to fraction form
    15,986.72/23,982.55 = 5,454.28/x
  3. Step 3: Cross multiply
    15,986.72x = 23,982.55 × 5,454.28
  4. Step 4: Simplify right side
    15,986.72x = 130,807,395.63
  5. Step 5: Solve for x
    x = 130,807,395.63/15,986.72
  6. Step 6: Final answer
    x = 8,182.25

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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.