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Finding the Fourth Proportional to 20,525.70, 28,325.67 and 11,572.41

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Solution

The fourth proportional to 20,525.70, 28,325.67 and 11,572.41 is: 15,970.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.70 : 28,325.67 = 11,572.41 : x
  2. Step 2: Convert to fraction form
    20,525.70/28,325.67 = 11,572.41/x
  3. Step 3: Cross multiply
    20,525.70x = 28,325.67 × 11,572.41
  4. Step 4: Simplify right side
    20,525.70x = 327,796,266.76
  5. Step 5: Solve for x
    x = 327,796,266.76/20,525.70
  6. Step 6: Final answer
    x = 15,970.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.