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Finding the Fourth Proportional to 22,520.64, 33,624.96 and 21,120.96

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Solution

The fourth proportional to 22,520.64, 33,624.96 and 21,120.96 is: 31,535.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,520.64 : 33,624.96 = 21,120.96 : x
  2. Step 2: Convert to fraction form
    22,520.64/33,624.96 = 21,120.96/x
  3. Step 3: Cross multiply
    22,520.64x = 33,624.96 × 21,120.96
  4. Step 4: Simplify right side
    22,520.64x = 710,191,435.16
  5. Step 5: Solve for x
    x = 710,191,435.16/22,520.64
  6. Step 6: Final answer
    x = 31,535.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.