Home / 28,015.28-38,659.56-15,439.04

Finding the Fourth Proportional to 28,015.28, 38,659.56 and 15,439.04

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Solution

The fourth proportional to 28,015.28, 38,659.56 and 15,439.04 is: 21,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.28 : 38,659.56 = 15,439.04 : x
  2. Step 2: Convert to fraction form
    28,015.28/38,659.56 = 15,439.04/x
  3. Step 3: Cross multiply
    28,015.28x = 38,659.56 × 15,439.04
  4. Step 4: Simplify right side
    28,015.28x = 596,866,493.22
  5. Step 5: Solve for x
    x = 596,866,493.22/28,015.28
  6. Step 6: Final answer
    x = 21,305.03

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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.