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Finding the Fourth Proportional to 21,750.80, 32,624.56 and 6,961.28

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Solution

The fourth proportional to 21,750.80, 32,624.56 and 6,961.28 is: 10,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.80 : 32,624.56 = 6,961.28 : x
  2. Step 2: Convert to fraction form
    21,750.80/32,624.56 = 6,961.28/x
  3. Step 3: Cross multiply
    21,750.80x = 32,624.56 × 6,961.28
  4. Step 4: Simplify right side
    21,750.80x = 227,108,697.04
  5. Step 5: Solve for x
    x = 227,108,697.04/21,750.80
  6. Step 6: Final answer
    x = 10,441.40

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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.