Home / 12,518,215.62-18,744,984.59-8,639,640.83

Finding the Fourth Proportional to 12,518,215.62, 18,744,984.59 and 8,639,640.83

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Solution

The fourth proportional to 12,518,215.62, 18,744,984.59 and 8,639,640.83 is: 12,937,142.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518,215.62 : 18,744,984.59 = 8,639,640.83 : x
  2. Step 2: Convert to fraction form
    12,518,215.62/18,744,984.59 = 8,639,640.83/x
  3. Step 3: Cross multiply
    12,518,215.62x = 18,744,984.59 × 8,639,640.83
  4. Step 4: Simplify right side
    12,518,215.62x = 161,949,934,238,600.19
  5. Step 5: Solve for x
    x = 161,949,934,238,600.19/12,518,215.62
  6. Step 6: Final answer
    x = 12,937,142.09

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1.5x scale

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.