Home / 21,305,921.60-31,958,882.40-7,847,998.40

Finding the Fourth Proportional to 21,305,921.60, 31,958,882.40 and 7,847,998.40

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Solution

The fourth proportional to 21,305,921.60, 31,958,882.40 and 7,847,998.40 is: 11,771,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305,921.60 : 31,958,882.40 = 7,847,998.40 : x
  2. Step 2: Convert to fraction form
    21,305,921.60/31,958,882.40 = 7,847,998.40/x
  3. Step 3: Cross multiply
    21,305,921.60x = 31,958,882.40 × 7,847,998.40
  4. Step 4: Simplify right side
    21,305,921.60x = 250,813,257,940,988.16
  5. Step 5: Solve for x
    x = 250,813,257,940,988.16/21,305,921.60
  6. Step 6: Final answer
    x = 11,771,997.60

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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.