Home / 18,316.71-27,456.38-7,218.90

Finding the Fourth Proportional to 18,316.71, 27,456.38 and 7,218.90

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Solution

The fourth proportional to 18,316.71, 27,456.38 and 7,218.90 is: 10,820.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,316.71 : 27,456.38 = 7,218.90 : x
  2. Step 2: Convert to fraction form
    18,316.71/27,456.38 = 7,218.90/x
  3. Step 3: Cross multiply
    18,316.71x = 27,456.38 × 7,218.90
  4. Step 4: Simplify right side
    18,316.71x = 198,204,688.21
  5. Step 5: Solve for x
    x = 198,204,688.21/18,316.71
  6. Step 6: Final answer
    x = 10,820.98

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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.