Home / 18,613,976.40-27,920,964.60-13,831,007.40

Finding the Fourth Proportional to 18,613,976.40, 27,920,964.60 and 13,831,007.40

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Solution

The fourth proportional to 18,613,976.40, 27,920,964.60 and 13,831,007.40 is: 20,746,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613,976.40 : 27,920,964.60 = 13,831,007.40 : x
  2. Step 2: Convert to fraction form
    18,613,976.40/27,920,964.60 = 13,831,007.40/x
  3. Step 3: Cross multiply
    18,613,976.40x = 27,920,964.60 × 13,831,007.40
  4. Step 4: Simplify right side
    18,613,976.40x = 386,175,067,997,738.06
  5. Step 5: Solve for x
    x = 386,175,067,997,738.06/18,613,976.40
  6. Step 6: Final answer
    x = 20,746,511.10

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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.