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Finding the Fourth Proportional to 8,967.92, 13,532.78 and 8,642.48

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Solution

The fourth proportional to 8,967.92, 13,532.78 and 8,642.48 is: 13,041.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967.92 : 13,532.78 = 8,642.48 : x
  2. Step 2: Convert to fraction form
    8,967.92/13,532.78 = 8,642.48/x
  3. Step 3: Cross multiply
    8,967.92x = 13,532.78 × 8,642.48
  4. Step 4: Simplify right side
    8,967.92x = 116,956,780.49
  5. Step 5: Solve for x
    x = 116,956,780.49/8,967.92
  6. Step 6: Final answer
    x = 13,041.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.