Home / 20,378,357.36-28,126,152.84-11,682,369.20

Finding the Fourth Proportional to 20,378,357.36, 28,126,152.84 and 11,682,369.20

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Solution

The fourth proportional to 20,378,357.36, 28,126,152.84 and 11,682,369.20 is: 16,123,973.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378,357.36 : 28,126,152.84 = 11,682,369.20 : x
  2. Step 2: Convert to fraction form
    20,378,357.36/28,126,152.84 = 11,682,369.20/x
  3. Step 3: Cross multiply
    20,378,357.36x = 28,126,152.84 × 11,682,369.20
  4. Step 4: Simplify right side
    20,378,357.36x = 328,580,101,652,508.50
  5. Step 5: Solve for x
    x = 328,580,101,652,508.50/20,378,357.36
  6. Step 6: Final answer
    x = 16,123,973.87

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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.