Home / 12,518,215.81-18,744,984.87-8,639,641.02

Finding the Fourth Proportional to 12,518,215.81, 18,744,984.87 and 8,639,641.02

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Solution

The fourth proportional to 12,518,215.81, 18,744,984.87 and 8,639,641.02 is: 12,937,142.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518,215.81 : 18,744,984.87 = 8,639,641.02 : x
  2. Step 2: Convert to fraction form
    12,518,215.81/18,744,984.87 = 8,639,641.02/x
  3. Step 3: Cross multiply
    12,518,215.81x = 18,744,984.87 × 8,639,641.02
  4. Step 4: Simplify right side
    12,518,215.81x = 161,949,940,131,837.69
  5. Step 5: Solve for x
    x = 161,949,940,131,837.69/12,518,215.81
  6. Step 6: Final answer
    x = 12,937,142.37

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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.