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Finding the Fourth Proportional to 21,809.31, 32,723.68 and 7,955.07

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Solution

The fourth proportional to 21,809.31, 32,723.68 and 7,955.07 is: 11,936.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.31 : 32,723.68 = 7,955.07 : x
  2. Step 2: Convert to fraction form
    21,809.31/32,723.68 = 7,955.07/x
  3. Step 3: Cross multiply
    21,809.31x = 32,723.68 × 7,955.07
  4. Step 4: Simplify right side
    21,809.31x = 260,318,961.66
  5. Step 5: Solve for x
    x = 260,318,961.66/21,809.31
  6. Step 6: Final answer
    x = 11,936.14

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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.