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Finding the Fourth Proportional to 26,889.60, 40,300.80 and 13,747.20

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Solution

The fourth proportional to 26,889.60, 40,300.80 and 13,747.20 is: 20,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,889.60 : 40,300.80 = 13,747.20 : x
  2. Step 2: Convert to fraction form
    26,889.60/40,300.80 = 13,747.20/x
  3. Step 3: Cross multiply
    26,889.60x = 40,300.80 × 13,747.20
  4. Step 4: Simplify right side
    26,889.60x = 554,023,157.76
  5. Step 5: Solve for x
    x = 554,023,157.76/26,889.60
  6. Step 6: Final answer
    x = 20,603.62

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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.