Home / 28,102.45-38,789.46-18,549.31

Finding the Fourth Proportional to 28,102.45, 38,789.46 and 18,549.31

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Solution

The fourth proportional to 28,102.45, 38,789.46 and 18,549.31 is: 25,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.45 : 38,789.46 = 18,549.31 : x
  2. Step 2: Convert to fraction form
    28,102.45/38,789.46 = 18,549.31/x
  3. Step 3: Cross multiply
    28,102.45x = 38,789.46 × 18,549.31
  4. Step 4: Simplify right side
    28,102.45x = 719,517,431.58
  5. Step 5: Solve for x
    x = 719,517,431.58/28,102.45
  6. Step 6: Final answer
    x = 25,603.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.