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Finding the Fourth Proportional to 22,021.20, 32,983.20 and 21,535.20

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Solution

The fourth proportional to 22,021.20, 32,983.20 and 21,535.20 is: 32,255.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,021.20 : 32,983.20 = 21,535.20 : x
  2. Step 2: Convert to fraction form
    22,021.20/32,983.20 = 21,535.20/x
  3. Step 3: Cross multiply
    22,021.20x = 32,983.20 × 21,535.20
  4. Step 4: Simplify right side
    22,021.20x = 710,299,808.64
  5. Step 5: Solve for x
    x = 710,299,808.64/22,021.20
  6. Step 6: Final answer
    x = 32,255.27

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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.