Home / 20,512,428.62-28,306,818.41-11,219,917.40

Finding the Fourth Proportional to 20,512,428.62, 28,306,818.41 and 11,219,917.40

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Solution

The fourth proportional to 20,512,428.62, 28,306,818.41 and 11,219,917.40 is: 15,483,303.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512,428.62 : 28,306,818.41 = 11,219,917.40 : x
  2. Step 2: Convert to fraction form
    20,512,428.62/28,306,818.41 = 11,219,917.40/x
  3. Step 3: Cross multiply
    20,512,428.62x = 28,306,818.41 × 11,219,917.40
  4. Step 4: Simplify right side
    20,512,428.62x = 317,600,164,219,365.62
  5. Step 5: Solve for x
    x = 317,600,164,219,365.62/20,512,428.62
  6. Step 6: Final answer
    x = 15,483,303.81

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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.