Home / 28,139.22-38,832.38-15,392.15

Finding the Fourth Proportional to 28,139.22, 38,832.38 and 15,392.15

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Solution

The fourth proportional to 28,139.22, 38,832.38 and 15,392.15 is: 21,241.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.22 : 38,832.38 = 15,392.15 : x
  2. Step 2: Convert to fraction form
    28,139.22/38,832.38 = 15,392.15/x
  3. Step 3: Cross multiply
    28,139.22x = 38,832.38 × 15,392.15
  4. Step 4: Simplify right side
    28,139.22x = 597,713,546.69
  5. Step 5: Solve for x
    x = 597,713,546.69/28,139.22
  6. Step 6: Final answer
    x = 21,241.30

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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.