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Finding the Fourth Proportional to 28,123.50, 38,811.24 and 15,549.06

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Solution

The fourth proportional to 28,123.50, 38,811.24 and 15,549.06 is: 21,458.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.50 : 38,811.24 = 15,549.06 : x
  2. Step 2: Convert to fraction form
    28,123.50/38,811.24 = 15,549.06/x
  3. Step 3: Cross multiply
    28,123.50x = 38,811.24 × 15,549.06
  4. Step 4: Simplify right side
    28,123.50x = 603,478,299.43
  5. Step 5: Solve for x
    x = 603,478,299.43/28,123.50
  6. Step 6: Final answer
    x = 21,458.15

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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.