Home / 13,289,972.67-18,340,161.75-7,178,401.17

Finding the Fourth Proportional to 13,289,972.67, 18,340,161.75 and 7,178,401.17

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Solution

The fourth proportional to 13,289,972.67, 18,340,161.75 and 7,178,401.17 is: 9,906,193.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289,972.67 : 18,340,161.75 = 7,178,401.17 : x
  2. Step 2: Convert to fraction form
    13,289,972.67/18,340,161.75 = 7,178,401.17/x
  3. Step 3: Cross multiply
    13,289,972.67x = 18,340,161.75 × 7,178,401.17
  4. Step 4: Simplify right side
    13,289,972.67x = 131,653,038,564,189.25
  5. Step 5: Solve for x
    x = 131,653,038,564,189.25/13,289,972.67
  6. Step 6: Final answer
    x = 9,906,193.33

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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.