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Finding the Fourth Proportional to 21,543.30, 32,310.30 and 6,750.30

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Solution

The fourth proportional to 21,543.30, 32,310.30 and 6,750.30 is: 10,123.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.30 : 32,310.30 = 6,750.30 : x
  2. Step 2: Convert to fraction form
    21,543.30/32,310.30 = 6,750.30/x
  3. Step 3: Cross multiply
    21,543.30x = 32,310.30 × 6,750.30
  4. Step 4: Simplify right side
    21,543.30x = 218,104,218.09
  5. Step 5: Solve for x
    x = 218,104,218.09/21,543.30
  6. Step 6: Final answer
    x = 10,123.99

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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.