Home / 28,549.75-39,415.94-18,631.03

Finding the Fourth Proportional to 28,549.75, 39,415.94 and 18,631.03

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Solution

The fourth proportional to 28,549.75, 39,415.94 and 18,631.03 is: 25,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.75 : 39,415.94 = 18,631.03 : x
  2. Step 2: Convert to fraction form
    28,549.75/39,415.94 = 18,631.03/x
  3. Step 3: Cross multiply
    28,549.75x = 39,415.94 × 18,631.03
  4. Step 4: Simplify right side
    28,549.75x = 734,359,560.62
  5. Step 5: Solve for x
    x = 734,359,560.62/28,549.75
  6. Step 6: Final answer
    x = 25,722.10

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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.