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Finding the Fourth Proportional to 10,572.81, 15,861.03 and 3,553.50

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Solution

The fourth proportional to 10,572.81, 15,861.03 and 3,553.50 is: 5,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.81 : 15,861.03 = 3,553.50 : x
  2. Step 2: Convert to fraction form
    10,572.81/15,861.03 = 3,553.50/x
  3. Step 3: Cross multiply
    10,572.81x = 15,861.03 × 3,553.50
  4. Step 4: Simplify right side
    10,572.81x = 56,362,170.11
  5. Step 5: Solve for x
    x = 56,362,170.11/10,572.81
  6. Step 6: Final answer
    x = 5,330.86

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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.