Home / 20,667,065.76-31,007,572.20-9,150,960.96

Finding the Fourth Proportional to 20,667,065.76, 31,007,572.20 and 9,150,960.96

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Solution

The fourth proportional to 20,667,065.76, 31,007,572.20 and 9,150,960.96 is: 13,729,529.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667,065.76 : 31,007,572.20 = 9,150,960.96 : x
  2. Step 2: Convert to fraction form
    20,667,065.76/31,007,572.20 = 9,150,960.96/x
  3. Step 3: Cross multiply
    20,667,065.76x = 31,007,572.20 × 9,150,960.96
  4. Step 4: Simplify right side
    20,667,065.76x = 283,749,082,666,581.31
  5. Step 5: Solve for x
    x = 283,749,082,666,581.31/20,667,065.76
  6. Step 6: Final answer
    x = 13,729,529.19

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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.