Home / 12,870,639.60-19,305,664.20-6,479,175.60

Finding the Fourth Proportional to 12,870,639.60, 19,305,664.20 and 6,479,175.60

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Solution

The fourth proportional to 12,870,639.60, 19,305,664.20 and 6,479,175.60 is: 9,718,614.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,870,639.60 : 19,305,664.20 = 6,479,175.60 : x
  2. Step 2: Convert to fraction form
    12,870,639.60/19,305,664.20 = 6,479,175.60/x
  3. Step 3: Cross multiply
    12,870,639.60x = 19,305,664.20 × 6,479,175.60
  4. Step 4: Simplify right side
    12,870,639.60x = 125,084,788,426,433.52
  5. Step 5: Solve for x
    x = 125,084,788,426,433.52/12,870,639.60
  6. Step 6: Final answer
    x = 9,718,614.79

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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.