Home / 28,164.19-38,864.91-15,414.85

Finding the Fourth Proportional to 28,164.19, 38,864.91 and 15,414.85

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Solution

The fourth proportional to 28,164.19, 38,864.91 and 15,414.85 is: 21,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.19 : 38,864.91 = 15,414.85 : x
  2. Step 2: Convert to fraction form
    28,164.19/38,864.91 = 15,414.85/x
  3. Step 3: Cross multiply
    28,164.19x = 38,864.91 × 15,414.85
  4. Step 4: Simplify right side
    28,164.19x = 599,096,757.91
  5. Step 5: Solve for x
    x = 599,096,757.91/28,164.19
  6. Step 6: Final answer
    x = 21,271.58

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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.