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Finding the Fourth Proportional to 18,346.56, 25,318 and 10,388.80

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Solution

The fourth proportional to 18,346.56, 25,318 and 10,388.80 is: 14,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.56 : 25,318 = 10,388.80 : x
  2. Step 2: Convert to fraction form
    18,346.56/25,318 = 10,388.80/x
  3. Step 3: Cross multiply
    18,346.56x = 25,318 × 10,388.80
  4. Step 4: Simplify right side
    18,346.56x = 263,023,638.40
  5. Step 5: Solve for x
    x = 263,023,638.40/18,346.56
  6. Step 6: Final answer
    x = 14,336.40

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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.