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Finding the Fourth Proportional to 18,795.60, 25,911.60 and 13,122.24

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Solution

The fourth proportional to 18,795.60, 25,911.60 and 13,122.24 is: 18,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.60 : 25,911.60 = 13,122.24 : x
  2. Step 2: Convert to fraction form
    18,795.60/25,911.60 = 13,122.24/x
  3. Step 3: Cross multiply
    18,795.60x = 25,911.60 × 13,122.24
  4. Step 4: Simplify right side
    18,795.60x = 340,018,233.98
  5. Step 5: Solve for x
    x = 340,018,233.98/18,795.60
  6. Step 6: Final answer
    x = 18,090.31

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1.5x scale

Why These Related Problems?

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