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Finding the Fourth Proportional to 21,811.08, 32,710.74 and 9,324.90

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Solution

The fourth proportional to 21,811.08, 32,710.74 and 9,324.90 is: 13,984.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.08 : 32,710.74 = 9,324.90 : x
  2. Step 2: Convert to fraction form
    21,811.08/32,710.74 = 9,324.90/x
  3. Step 3: Cross multiply
    21,811.08x = 32,710.74 × 9,324.90
  4. Step 4: Simplify right side
    21,811.08x = 305,024,379.43
  5. Step 5: Solve for x
    x = 305,024,379.43/21,811.08
  6. Step 6: Final answer
    x = 13,984.84

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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.