Home / 13,368,721.40-18,448,943.87-7,408,227.76

Finding the Fourth Proportional to 13,368,721.40, 18,448,943.87 and 7,408,227.76

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Solution

The fourth proportional to 13,368,721.40, 18,448,943.87 and 7,408,227.76 is: 10,223,414.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368,721.40 : 18,448,943.87 = 7,408,227.76 : x
  2. Step 2: Convert to fraction form
    13,368,721.40/18,448,943.87 = 7,408,227.76/x
  3. Step 3: Cross multiply
    13,368,721.40x = 18,448,943.87 × 7,408,227.76
  4. Step 4: Simplify right side
    13,368,721.40x = 136,673,978,092,814.03
  5. Step 5: Solve for x
    x = 136,673,978,092,814.03/13,368,721.40
  6. Step 6: Final answer
    x = 10,223,414.34

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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.