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Finding the Fourth Proportional to 21,720.94, 32,582.16 and 7,489.24

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Solution

The fourth proportional to 21,720.94, 32,582.16 and 7,489.24 is: 11,234.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.94 : 32,582.16 = 7,489.24 : x
  2. Step 2: Convert to fraction form
    21,720.94/32,582.16 = 7,489.24/x
  3. Step 3: Cross multiply
    21,720.94x = 32,582.16 × 7,489.24
  4. Step 4: Simplify right side
    21,720.94x = 244,015,615.96
  5. Step 5: Solve for x
    x = 244,015,615.96/21,720.94
  6. Step 6: Final answer
    x = 11,234.12

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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.