Home / 18,388.20-27,560.70-9,618.60

Finding the Fourth Proportional to 18,388.20, 27,560.70 and 9,618.60

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Solution

The fourth proportional to 18,388.20, 27,560.70 and 9,618.60 is: 14,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.20 : 27,560.70 = 9,618.60 : x
  2. Step 2: Convert to fraction form
    18,388.20/27,560.70 = 9,618.60/x
  3. Step 3: Cross multiply
    18,388.20x = 27,560.70 × 9,618.60
  4. Step 4: Simplify right side
    18,388.20x = 265,095,349.02
  5. Step 5: Solve for x
    x = 265,095,349.02/18,388.20
  6. Step 6: Final answer
    x = 14,416.60

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1.5x scale

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.