Home / 28,196.68-38,908.42-15,620.20

Finding the Fourth Proportional to 28,196.68, 38,908.42 and 15,620.20

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Solution

The fourth proportional to 28,196.68, 38,908.42 and 15,620.20 is: 21,554.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.68 : 38,908.42 = 15,620.20 : x
  2. Step 2: Convert to fraction form
    28,196.68/38,908.42 = 15,620.20/x
  3. Step 3: Cross multiply
    28,196.68x = 38,908.42 × 15,620.20
  4. Step 4: Simplify right side
    28,196.68x = 607,757,302.08
  5. Step 5: Solve for x
    x = 607,757,302.08/28,196.68
  6. Step 6: Final answer
    x = 21,554.21

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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.