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Finding the Fourth Proportional to 21,866.92, 32,816.34 and 8,723.06

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Solution

The fourth proportional to 21,866.92, 32,816.34 and 8,723.06 is: 13,090.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.92 : 32,816.34 = 8,723.06 : x
  2. Step 2: Convert to fraction form
    21,866.92/32,816.34 = 8,723.06/x
  3. Step 3: Cross multiply
    21,866.92x = 32,816.34 × 8,723.06
  4. Step 4: Simplify right side
    21,866.92x = 286,258,902.80
  5. Step 5: Solve for x
    x = 286,258,902.80/21,866.92
  6. Step 6: Final answer
    x = 13,090.96

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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.