Home / 18,867.47-28,313.49-7,180.79

Finding the Fourth Proportional to 18,867.47, 28,313.49 and 7,180.79

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Solution

The fourth proportional to 18,867.47, 28,313.49 and 7,180.79 is: 10,775.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.47 : 28,313.49 = 7,180.79 : x
  2. Step 2: Convert to fraction form
    18,867.47/28,313.49 = 7,180.79/x
  3. Step 3: Cross multiply
    18,867.47x = 28,313.49 × 7,180.79
  4. Step 4: Simplify right side
    18,867.47x = 203,313,225.86
  5. Step 5: Solve for x
    x = 203,313,225.86/18,867.47
  6. Step 6: Final answer
    x = 10,775.86

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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.