Home / 18,660.76-27,990.70-7,564.48

Finding the Fourth Proportional to 18,660.76, 27,990.70 and 7,564.48

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Solution

The fourth proportional to 18,660.76, 27,990.70 and 7,564.48 is: 11,346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.76 : 27,990.70 = 7,564.48 : x
  2. Step 2: Convert to fraction form
    18,660.76/27,990.70 = 7,564.48/x
  3. Step 3: Cross multiply
    18,660.76x = 27,990.70 × 7,564.48
  4. Step 4: Simplify right side
    18,660.76x = 211,735,090.34
  5. Step 5: Solve for x
    x = 211,735,090.34/18,660.76
  6. Step 6: Final answer
    x = 11,346.54

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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.