Home / 28,193.38-38,908.14-15,618.12

Finding the Fourth Proportional to 28,193.38, 38,908.14 and 15,618.12

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Solution

The fourth proportional to 28,193.38, 38,908.14 and 15,618.12 is: 21,553.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.38 : 38,908.14 = 15,618.12 : x
  2. Step 2: Convert to fraction form
    28,193.38/38,908.14 = 15,618.12/x
  3. Step 3: Cross multiply
    28,193.38x = 38,908.14 × 15,618.12
  4. Step 4: Simplify right side
    28,193.38x = 607,671,999.50
  5. Step 5: Solve for x
    x = 607,671,999.50/28,193.38
  6. Step 6: Final answer
    x = 21,553.71

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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.