Home / 18,540.09-27,777.74-15,440.04

Finding the Fourth Proportional to 18,540.09, 27,777.74 and 15,440.04

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Solution

The fourth proportional to 18,540.09, 27,777.74 and 15,440.04 is: 23,133.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.09 : 27,777.74 = 15,440.04 : x
  2. Step 2: Convert to fraction form
    18,540.09/27,777.74 = 15,440.04/x
  3. Step 3: Cross multiply
    18,540.09x = 27,777.74 × 15,440.04
  4. Step 4: Simplify right side
    18,540.09x = 428,889,339.51
  5. Step 5: Solve for x
    x = 428,889,339.51/18,540.09
  6. Step 6: Final answer
    x = 23,133.08

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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.