Home / 21,155,132.16-31,732,905.60-8,378,749.44

Finding the Fourth Proportional to 21,155,132.16, 31,732,905.60 and 8,378,749.44

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Solution

The fourth proportional to 21,155,132.16, 31,732,905.60 and 8,378,749.44 is: 12,568,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155,132.16 : 31,732,905.60 = 8,378,749.44 : x
  2. Step 2: Convert to fraction form
    21,155,132.16/31,732,905.60 = 8,378,749.44/x
  3. Step 3: Cross multiply
    21,155,132.16x = 31,732,905.60 × 8,378,749.44
  4. Step 4: Simplify right side
    21,155,132.16x = 265,882,065,025,572.88
  5. Step 5: Solve for x
    x = 265,882,065,025,572.88/21,155,132.16
  6. Step 6: Final answer
    x = 12,568,206.29

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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.