Home / 20,115,074.70-30,172,612.05-7,335,996.30

Finding the Fourth Proportional to 20,115,074.70, 30,172,612.05 and 7,335,996.30

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Solution

The fourth proportional to 20,115,074.70, 30,172,612.05 and 7,335,996.30 is: 11,003,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115,074.70 : 30,172,612.05 = 7,335,996.30 : x
  2. Step 2: Convert to fraction form
    20,115,074.70/30,172,612.05 = 7,335,996.30/x
  3. Step 3: Cross multiply
    20,115,074.70x = 30,172,612.05 × 7,335,996.30
  4. Step 4: Simplify right side
    20,115,074.70x = 221,346,170,360,135.41
  5. Step 5: Solve for x
    x = 221,346,170,360,135.41/20,115,074.70
  6. Step 6: Final answer
    x = 11,003,994.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.