Home / 13,171,688.70-18,177,773.67-7,371,138.30

Finding the Fourth Proportional to 13,171,688.70, 18,177,773.67 and 7,371,138.30

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Solution

The fourth proportional to 13,171,688.70, 18,177,773.67 and 7,371,138.30 is: 10,172,642.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171,688.70 : 18,177,773.67 = 7,371,138.30 : x
  2. Step 2: Convert to fraction form
    13,171,688.70/18,177,773.67 = 7,371,138.30/x
  3. Step 3: Cross multiply
    13,171,688.70x = 18,177,773.67 × 7,371,138.30
  4. Step 4: Simplify right side
    13,171,688.70x = 133,990,883,707,668.58
  5. Step 5: Solve for x
    x = 133,990,883,707,668.58/13,171,688.70
  6. Step 6: Final answer
    x = 10,172,642.76

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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.