Home / 12,528,067.20-18,792,100.80-7,489,219.20

Finding the Fourth Proportional to 12,528,067.20, 18,792,100.80 and 7,489,219.20

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Solution

The fourth proportional to 12,528,067.20, 18,792,100.80 and 7,489,219.20 is: 11,233,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528,067.20 : 18,792,100.80 = 7,489,219.20 : x
  2. Step 2: Convert to fraction form
    12,528,067.20/18,792,100.80 = 7,489,219.20/x
  3. Step 3: Cross multiply
    12,528,067.20x = 18,792,100.80 × 7,489,219.20
  4. Step 4: Simplify right side
    12,528,067.20x = 140,738,162,119,695.38
  5. Step 5: Solve for x
    x = 140,738,162,119,695.38/12,528,067.20
  6. Step 6: Final answer
    x = 11,233,828.80

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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.