Home / 21,212,785.18-31,806,156.01-8,243,792.56

Finding the Fourth Proportional to 21,212,785.18, 31,806,156.01 and 8,243,792.56

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Solution

The fourth proportional to 21,212,785.18, 31,806,156.01 and 8,243,792.56 is: 12,360,628.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,785.18 : 31,806,156.01 = 8,243,792.56 : x
  2. Step 2: Convert to fraction form
    21,212,785.18/31,806,156.01 = 8,243,792.56/x
  3. Step 3: Cross multiply
    21,212,785.18x = 31,806,156.01 × 8,243,792.56
  4. Step 4: Simplify right side
    21,212,785.18x = 262,203,352,277,437.28
  5. Step 5: Solve for x
    x = 262,203,352,277,437.28/21,212,785.18
  6. Step 6: Final answer
    x = 12,360,628.27

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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.