Home / 18,180.21-27,278.55-9,290.07

Finding the Fourth Proportional to 18,180.21, 27,278.55 and 9,290.07

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Solution

The fourth proportional to 18,180.21, 27,278.55 and 9,290.07 is: 13,939.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180.21 : 27,278.55 = 9,290.07 : x
  2. Step 2: Convert to fraction form
    18,180.21/27,278.55 = 9,290.07/x
  3. Step 3: Cross multiply
    18,180.21x = 27,278.55 × 9,290.07
  4. Step 4: Simplify right side
    18,180.21x = 253,419,639.00
  5. Step 5: Solve for x
    x = 253,419,639.00/18,180.21
  6. Step 6: Final answer
    x = 13,939.31

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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.