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Finding the Fourth Proportional to 21,904.05, 32,873.10 and 8,765.04

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Solution

The fourth proportional to 21,904.05, 32,873.10 and 8,765.04 is: 13,154.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.05 : 32,873.10 = 8,765.04 : x
  2. Step 2: Convert to fraction form
    21,904.05/32,873.10 = 8,765.04/x
  3. Step 3: Cross multiply
    21,904.05x = 32,873.10 × 8,765.04
  4. Step 4: Simplify right side
    21,904.05x = 288,134,036.42
  5. Step 5: Solve for x
    x = 288,134,036.42/21,904.05
  6. Step 6: Final answer
    x = 13,154.37

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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.