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Finding the Fourth Proportional to 21,842.59, 32,779.03 and 9,997.81

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Solution

The fourth proportional to 21,842.59, 32,779.03 and 9,997.81 is: 15,003.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842.59 : 32,779.03 = 9,997.81 : x
  2. Step 2: Convert to fraction form
    21,842.59/32,779.03 = 9,997.81/x
  3. Step 3: Cross multiply
    21,842.59x = 32,779.03 × 9,997.81
  4. Step 4: Simplify right side
    21,842.59x = 327,718,513.92
  5. Step 5: Solve for x
    x = 327,718,513.92/21,842.59
  6. Step 6: Final answer
    x = 15,003.65

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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.