Home / 27,647.28-38,161.92-18,688.80

Finding the Fourth Proportional to 27,647.28, 38,161.92 and 18,688.80

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Solution

The fourth proportional to 27,647.28, 38,161.92 and 18,688.80 is: 25,796.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,647.28 : 38,161.92 = 18,688.80 : x
  2. Step 2: Convert to fraction form
    27,647.28/38,161.92 = 18,688.80/x
  3. Step 3: Cross multiply
    27,647.28x = 38,161.92 × 18,688.80
  4. Step 4: Simplify right side
    27,647.28x = 713,200,490.50
  5. Step 5: Solve for x
    x = 713,200,490.50/27,647.28
  6. Step 6: Final answer
    x = 25,796.41

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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.