Home / 13,702,778.86-18,905,179.53-7,818,185.61

Finding the Fourth Proportional to 13,702,778.86, 18,905,179.53 and 7,818,185.61

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Solution

The fourth proportional to 13,702,778.86, 18,905,179.53 and 7,818,185.61 is: 10,786,440.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702,778.86 : 18,905,179.53 = 7,818,185.61 : x
  2. Step 2: Convert to fraction form
    13,702,778.86/18,905,179.53 = 7,818,185.61/x
  3. Step 3: Cross multiply
    13,702,778.86x = 18,905,179.53 × 7,818,185.61
  4. Step 4: Simplify right side
    13,702,778.86x = 147,804,202,541,253.47
  5. Step 5: Solve for x
    x = 147,804,202,541,253.47/13,702,778.86
  6. Step 6: Final answer
    x = 10,786,440.04

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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.