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Finding the Fourth Proportional to 8,724.33, 13,157.80 and 8,568.81

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Solution

The fourth proportional to 8,724.33, 13,157.80 and 8,568.81 is: 12,923.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.33 : 13,157.80 = 8,568.81 : x
  2. Step 2: Convert to fraction form
    8,724.33/13,157.80 = 8,568.81/x
  3. Step 3: Cross multiply
    8,724.33x = 13,157.80 × 8,568.81
  4. Step 4: Simplify right side
    8,724.33x = 112,746,666.80
  5. Step 5: Solve for x
    x = 112,746,666.80/8,724.33
  6. Step 6: Final answer
    x = 12,923.25

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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.