Home / 12,253,282.80-18,379,924.20-7,718,319.60

Finding the Fourth Proportional to 12,253,282.80, 18,379,924.20 and 7,718,319.60

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Solution

The fourth proportional to 12,253,282.80, 18,379,924.20 and 7,718,319.60 is: 11,577,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253,282.80 : 18,379,924.20 = 7,718,319.60 : x
  2. Step 2: Convert to fraction form
    12,253,282.80/18,379,924.20 = 7,718,319.60/x
  3. Step 3: Cross multiply
    12,253,282.80x = 18,379,924.20 × 7,718,319.60
  4. Step 4: Simplify right side
    12,253,282.80x = 141,862,129,199,374.31
  5. Step 5: Solve for x
    x = 141,862,129,199,374.31/12,253,282.80
  6. Step 6: Final answer
    x = 11,577,479.40

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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.