Home / 12,072,468.80-18,129,698.40-6,403,764.80

Finding the Fourth Proportional to 12,072,468.80, 18,129,698.40 and 6,403,764.80

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Solution

The fourth proportional to 12,072,468.80, 18,129,698.40 and 6,403,764.80 is: 9,616,783.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072,468.80 : 18,129,698.40 = 6,403,764.80 : x
  2. Step 2: Convert to fraction form
    12,072,468.80/18,129,698.40 = 6,403,764.80/x
  3. Step 3: Cross multiply
    12,072,468.80x = 18,129,698.40 × 6,403,764.80
  4. Step 4: Simplify right side
    12,072,468.80x = 116,098,324,448,536.31
  5. Step 5: Solve for x
    x = 116,098,324,448,536.31/12,072,468.80
  6. Step 6: Final answer
    x = 9,616,783.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.