Home / 20,502,919.40-30,733,383.90-11,978,868.20

Finding the Fourth Proportional to 20,502,919.40, 30,733,383.90 and 11,978,868.20

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Solution

The fourth proportional to 20,502,919.40, 30,733,383.90 and 11,978,868.20 is: 17,956,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502,919.40 : 30,733,383.90 = 11,978,868.20 : x
  2. Step 2: Convert to fraction form
    20,502,919.40/30,733,383.90 = 11,978,868.20/x
  3. Step 3: Cross multiply
    20,502,919.40x = 30,733,383.90 × 11,978,868.20
  4. Step 4: Simplify right side
    20,502,919.40x = 368,151,155,078,101.94
  5. Step 5: Solve for x
    x = 368,151,155,078,101.94/20,502,919.40
  6. Step 6: Final answer
    x = 17,956,035.82

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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.