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Finding the Fourth Proportional to 10,602.20, 15,903.30 and 6,723.80

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Solution

The fourth proportional to 10,602.20, 15,903.30 and 6,723.80 is: 10,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,602.20 : 15,903.30 = 6,723.80 : x
  2. Step 2: Convert to fraction form
    10,602.20/15,903.30 = 6,723.80/x
  3. Step 3: Cross multiply
    10,602.20x = 15,903.30 × 6,723.80
  4. Step 4: Simplify right side
    10,602.20x = 106,930,608.54
  5. Step 5: Solve for x
    x = 106,930,608.54/10,602.20
  6. Step 6: Final answer
    x = 10,085.70

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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.