Home / 21,212,784.18-31,806,154.51-8,243,791.56

Finding the Fourth Proportional to 21,212,784.18, 31,806,154.51 and 8,243,791.56

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Solution

The fourth proportional to 21,212,784.18, 31,806,154.51 and 8,243,791.56 is: 12,360,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,784.18 : 31,806,154.51 = 8,243,791.56 : x
  2. Step 2: Convert to fraction form
    21,212,784.18/31,806,154.51 = 8,243,791.56/x
  3. Step 3: Cross multiply
    21,212,784.18x = 31,806,154.51 × 8,243,791.56
  4. Step 4: Simplify right side
    21,212,784.18x = 262,203,308,105,593.94
  5. Step 5: Solve for x
    x = 262,203,308,105,593.94/21,212,784.18
  6. Step 6: Final answer
    x = 12,360,626.77

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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.