Home / 12,518,215.43-18,744,984.31-8,639,640.64

Finding the Fourth Proportional to 12,518,215.43, 18,744,984.31 and 8,639,640.64

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Solution

The fourth proportional to 12,518,215.43, 18,744,984.31 and 8,639,640.64 is: 12,937,141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518,215.43 : 18,744,984.31 = 8,639,640.64 : x
  2. Step 2: Convert to fraction form
    12,518,215.43/18,744,984.31 = 8,639,640.64/x
  3. Step 3: Cross multiply
    12,518,215.43x = 18,744,984.31 × 8,639,640.64
  4. Step 4: Simplify right side
    12,518,215.43x = 161,949,928,285,225.25
  5. Step 5: Solve for x
    x = 161,949,928,285,225.25/12,518,215.43
  6. Step 6: Final answer
    x = 12,937,141.81

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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.