Home / 28,213.51-38,934.39-15,467.42

Finding the Fourth Proportional to 28,213.51, 38,934.39 and 15,467.42

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Solution

The fourth proportional to 28,213.51, 38,934.39 and 15,467.42 is: 21,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.51 : 38,934.39 = 15,467.42 : x
  2. Step 2: Convert to fraction form
    28,213.51/38,934.39 = 15,467.42/x
  3. Step 3: Cross multiply
    28,213.51x = 38,934.39 × 15,467.42
  4. Step 4: Simplify right side
    28,213.51x = 602,214,562.57
  5. Step 5: Solve for x
    x = 602,214,562.57/28,213.51
  6. Step 6: Final answer
    x = 21,344.90

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Half scale
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Double scale
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Similar ratio
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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.