Home / 13,320,289.89-18,381,963.87-7,208,718.39

Finding the Fourth Proportional to 13,320,289.89, 18,381,963.87 and 7,208,718.39

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Solution

The fourth proportional to 13,320,289.89, 18,381,963.87 and 7,208,718.39 is: 9,948,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320,289.89 : 18,381,963.87 = 7,208,718.39 : x
  2. Step 2: Convert to fraction form
    13,320,289.89/18,381,963.87 = 7,208,718.39/x
  3. Step 3: Cross multiply
    13,320,289.89x = 18,381,963.87 × 7,208,718.39
  4. Step 4: Simplify right side
    13,320,289.89x = 132,510,400,993,984.58
  5. Step 5: Solve for x
    x = 132,510,400,993,984.58/13,320,289.89
  6. Step 6: Final answer
    x = 9,948,011.80

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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.