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Finding the Fourth Proportional to 21,560.70, 32,340.98 and 6,770.72

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Solution

The fourth proportional to 21,560.70, 32,340.98 and 6,770.72 is: 10,156.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.70 : 32,340.98 = 6,770.72 : x
  2. Step 2: Convert to fraction form
    21,560.70/32,340.98 = 6,770.72/x
  3. Step 3: Cross multiply
    21,560.70x = 32,340.98 × 6,770.72
  4. Step 4: Simplify right side
    21,560.70x = 218,971,720.11
  5. Step 5: Solve for x
    x = 218,971,720.11/21,560.70
  6. Step 6: Final answer
    x = 10,156.06

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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.