Home / 28,163.73-38,865.36-15,416.61

Finding the Fourth Proportional to 28,163.73, 38,865.36 and 15,416.61

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Solution

The fourth proportional to 28,163.73, 38,865.36 and 15,416.61 is: 21,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.73 : 38,865.36 = 15,416.61 : x
  2. Step 2: Convert to fraction form
    28,163.73/38,865.36 = 15,416.61/x
  3. Step 3: Cross multiply
    28,163.73x = 38,865.36 × 15,416.61
  4. Step 4: Simplify right side
    28,163.73x = 599,172,097.63
  5. Step 5: Solve for x
    x = 599,172,097.63/28,163.73
  6. Step 6: Final answer
    x = 21,274.60

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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.