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Finding the Fourth Proportional to 25,388.64, 38,091.60 and 13,068

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Solution

The fourth proportional to 25,388.64, 38,091.60 and 13,068 is: 19,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,388.64 : 38,091.60 = 13,068 : x
  2. Step 2: Convert to fraction form
    25,388.64/38,091.60 = 13,068/x
  3. Step 3: Cross multiply
    25,388.64x = 38,091.60 × 13,068
  4. Step 4: Simplify right side
    25,388.64x = 497,781,028.80
  5. Step 5: Solve for x
    x = 497,781,028.80/25,388.64
  6. Step 6: Final answer
    x = 19,606.45

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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.