Home / 20,529,667.86-28,331,662.29-11,237,245.53

Finding the Fourth Proportional to 20,529,667.86, 28,331,662.29 and 11,237,245.53

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Solution

The fourth proportional to 20,529,667.86, 28,331,662.29 and 11,237,245.53 is: 15,507,793.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529,667.86 : 28,331,662.29 = 11,237,245.53 : x
  2. Step 2: Convert to fraction form
    20,529,667.86/28,331,662.29 = 11,237,245.53/x
  3. Step 3: Cross multiply
    20,529,667.86x = 28,331,662.29 × 11,237,245.53
  4. Step 4: Simplify right side
    20,529,667.86x = 318,369,845,425,772.06
  5. Step 5: Solve for x
    x = 318,369,845,425,772.06/20,529,667.86
  6. Step 6: Final answer
    x = 15,507,793.29

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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.