Home / 28,370.40-39,150.45-15,794.88

Finding the Fourth Proportional to 28,370.40, 39,150.45 and 15,794.88

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Solution

The fourth proportional to 28,370.40, 39,150.45 and 15,794.88 is: 21,796.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.40 : 39,150.45 = 15,794.88 : x
  2. Step 2: Convert to fraction form
    28,370.40/39,150.45 = 15,794.88/x
  3. Step 3: Cross multiply
    28,370.40x = 39,150.45 × 15,794.88
  4. Step 4: Simplify right side
    28,370.40x = 618,376,659.70
  5. Step 5: Solve for x
    x = 618,376,659.70/28,370.40
  6. Step 6: Final answer
    x = 21,796.54

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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.