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Finding the Fourth Proportional to 9,433.68, 12,988.74 and 8,558.88

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Solution

The fourth proportional to 9,433.68, 12,988.74 and 8,558.88 is: 11,784.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,433.68 : 12,988.74 = 8,558.88 : x
  2. Step 2: Convert to fraction form
    9,433.68/12,988.74 = 8,558.88/x
  3. Step 3: Cross multiply
    9,433.68x = 12,988.74 × 8,558.88
  4. Step 4: Simplify right side
    9,433.68x = 111,169,067.01
  5. Step 5: Solve for x
    x = 111,169,067.01/9,433.68
  6. Step 6: Final answer
    x = 11,784.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.