Home / 28,867.38-39,837.10-15,619.38

Finding the Fourth Proportional to 28,867.38, 39,837.10 and 15,619.38

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Solution

The fourth proportional to 28,867.38, 39,837.10 and 15,619.38 is: 21,554.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,867.38 : 39,837.10 = 15,619.38 : x
  2. Step 2: Convert to fraction form
    28,867.38/39,837.10 = 15,619.38/x
  3. Step 3: Cross multiply
    28,867.38x = 39,837.10 × 15,619.38
  4. Step 4: Simplify right side
    28,867.38x = 622,230,803.00
  5. Step 5: Solve for x
    x = 622,230,803.00/28,867.38
  6. Step 6: Final answer
    x = 21,554.81

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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.