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Finding the Fourth Proportional to 12,659.43, 18,973.73 and 8,962.71

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Solution

The fourth proportional to 12,659.43, 18,973.73 and 8,962.71 is: 13,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.43 : 18,973.73 = 8,962.71 : x
  2. Step 2: Convert to fraction form
    12,659.43/18,973.73 = 8,962.71/x
  3. Step 3: Cross multiply
    12,659.43x = 18,973.73 × 8,962.71
  4. Step 4: Simplify right side
    12,659.43x = 170,055,994.79
  5. Step 5: Solve for x
    x = 170,055,994.79/12,659.43
  6. Step 6: Final answer
    x = 13,433.15

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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.