Home / 13,670,515.82-18,865,317.21-7,789,982.24

Finding the Fourth Proportional to 13,670,515.82, 18,865,317.21 and 7,789,982.24

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Solution

The fourth proportional to 13,670,515.82, 18,865,317.21 and 7,789,982.24 is: 10,750,178.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670,515.82 : 18,865,317.21 = 7,789,982.24 : x
  2. Step 2: Convert to fraction form
    13,670,515.82/18,865,317.21 = 7,789,982.24/x
  3. Step 3: Cross multiply
    13,670,515.82x = 18,865,317.21 × 7,789,982.24
  4. Step 4: Simplify right side
    13,670,515.82x = 146,960,486,017,866.38
  5. Step 5: Solve for x
    x = 146,960,486,017,866.38/13,670,515.82
  6. Step 6: Final answer
    x = 10,750,178.56

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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.