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Finding the Fourth Proportional to 38,564.68, 57,807.60 and 21,889.54

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Solution

The fourth proportional to 38,564.68, 57,807.60 and 21,889.54 is: 32,811.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,564.68 : 57,807.60 = 21,889.54 : x
  2. Step 2: Convert to fraction form
    38,564.68/57,807.60 = 21,889.54/x
  3. Step 3: Cross multiply
    38,564.68x = 57,807.60 × 21,889.54
  4. Step 4: Simplify right side
    38,564.68x = 1,265,381,772.50
  5. Step 5: Solve for x
    x = 1,265,381,772.50/38,564.68
  6. Step 6: Final answer
    x = 32,811.93

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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.