Home / 15,755.27-21,740.56-9,040.75

Finding the Fourth Proportional to 15,755.27, 21,740.56 and 9,040.75

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Solution

The fourth proportional to 15,755.27, 21,740.56 and 9,040.75 is: 12,475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.27 : 21,740.56 = 9,040.75 : x
  2. Step 2: Convert to fraction form
    15,755.27/21,740.56 = 9,040.75/x
  3. Step 3: Cross multiply
    15,755.27x = 21,740.56 × 9,040.75
  4. Step 4: Simplify right side
    15,755.27x = 196,550,890.87
  5. Step 5: Solve for x
    x = 196,550,890.87/15,755.27
  6. Step 6: Final answer
    x = 12,475.25

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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.