Home / 20,407,834.78-28,161,749.10-12,672,712.24

Finding the Fourth Proportional to 20,407,834.78, 28,161,749.10 and 12,672,712.24

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Solution

The fourth proportional to 20,407,834.78, 28,161,749.10 and 12,672,712.24 is: 17,487,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,834.78 : 28,161,749.10 = 12,672,712.24 : x
  2. Step 2: Convert to fraction form
    20,407,834.78/28,161,749.10 = 12,672,712.24/x
  3. Step 3: Cross multiply
    20,407,834.78x = 28,161,749.10 × 12,672,712.24
  4. Step 4: Simplify right side
    20,407,834.78x = 356,885,742,519,379
  5. Step 5: Solve for x
    x = 356,885,742,519,379/20,407,834.78
  6. Step 6: Final answer
    x = 17,487,682.86

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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.