Home / 18,120,643.92-25,006,165.20-9,860,424.48

Finding the Fourth Proportional to 18,120,643.92, 25,006,165.20 and 9,860,424.48

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Solution

The fourth proportional to 18,120,643.92, 25,006,165.20 and 9,860,424.48 is: 13,607,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120,643.92 : 25,006,165.20 = 9,860,424.48 : x
  2. Step 2: Convert to fraction form
    18,120,643.92/25,006,165.20 = 9,860,424.48/x
  3. Step 3: Cross multiply
    18,120,643.92x = 25,006,165.20 × 9,860,424.48
  4. Step 4: Simplify right side
    18,120,643.92x = 246,571,403,489,004.09
  5. Step 5: Solve for x
    x = 246,571,403,489,004.09/18,120,643.92
  6. Step 6: Final answer
    x = 13,607,209.80

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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.