Home / 28,410.54-39,206.30-15,489.83

Finding the Fourth Proportional to 28,410.54, 39,206.30 and 15,489.83

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Solution

The fourth proportional to 28,410.54, 39,206.30 and 15,489.83 is: 21,375.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.54 : 39,206.30 = 15,489.83 : x
  2. Step 2: Convert to fraction form
    28,410.54/39,206.30 = 15,489.83/x
  3. Step 3: Cross multiply
    28,410.54x = 39,206.30 × 15,489.83
  4. Step 4: Simplify right side
    28,410.54x = 607,298,648.45
  5. Step 5: Solve for x
    x = 607,298,648.45/28,410.54
  6. Step 6: Final answer
    x = 21,375.82

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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.