Home / 20,558,399.40-28,359,978.66-13,940,750.16

Finding the Fourth Proportional to 20,558,399.40, 28,359,978.66 and 13,940,750.16

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Solution

The fourth proportional to 20,558,399.40, 28,359,978.66 and 13,940,750.16 is: 19,231,038.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558,399.40 : 28,359,978.66 = 13,940,750.16 : x
  2. Step 2: Convert to fraction form
    20,558,399.40/28,359,978.66 = 13,940,750.16/x
  3. Step 3: Cross multiply
    20,558,399.40x = 28,359,978.66 × 13,940,750.16
  4. Step 4: Simplify right side
    20,558,399.40x = 395,359,377,041,991.56
  5. Step 5: Solve for x
    x = 395,359,377,041,991.56/20,558,399.40
  6. Step 6: Final answer
    x = 19,231,038.83

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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.