Home / 38,212,389-52,731,514.89-20,808,694.98

Finding the Fourth Proportional to 38,212,389, 52,731,514.89 and 20,808,694.98

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Solution

The fourth proportional to 38,212,389, 52,731,514.89 and 20,808,694.98 is: 28,715,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,212,389 : 52,731,514.89 = 20,808,694.98 : x
  2. Step 2: Convert to fraction form
    38,212,389/52,731,514.89 = 20,808,694.98/x
  3. Step 3: Cross multiply
    38,212,389x = 52,731,514.89 × 20,808,694.98
  4. Step 4: Simplify right side
    38,212,389x = 1,097,274,009,179,338.25
  5. Step 5: Solve for x
    x = 1,097,274,009,179,338.25/38,212,389
  6. Step 6: Final answer
    x = 28,715,137.63

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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.