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Finding the Fourth Proportional to 21,804.56, 32,699.84 and 7,009.88

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Solution

The fourth proportional to 21,804.56, 32,699.84 and 7,009.88 is: 10,512.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.56 : 32,699.84 = 7,009.88 : x
  2. Step 2: Convert to fraction form
    21,804.56/32,699.84 = 7,009.88/x
  3. Step 3: Cross multiply
    21,804.56x = 32,699.84 × 7,009.88
  4. Step 4: Simplify right side
    21,804.56x = 229,221,954.42
  5. Step 5: Solve for x
    x = 229,221,954.42/21,804.56
  6. Step 6: Final answer
    x = 10,512.57

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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.