Home / 12,115,314.70-18,172,972.05-7,332,345.70

Finding the Fourth Proportional to 12,115,314.70, 18,172,972.05 and 7,332,345.70

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Solution

The fourth proportional to 12,115,314.70, 18,172,972.05 and 7,332,345.70 is: 10,998,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,314.70 : 18,172,972.05 = 7,332,345.70 : x
  2. Step 2: Convert to fraction form
    12,115,314.70/18,172,972.05 = 7,332,345.70/x
  3. Step 3: Cross multiply
    12,115,314.70x = 18,172,972.05 × 7,332,345.70
  4. Step 4: Simplify right side
    12,115,314.70x = 133,250,513,467,037.69
  5. Step 5: Solve for x
    x = 133,250,513,467,037.69/12,115,314.70
  6. Step 6: Final answer
    x = 10,998,518.55

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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.