Home / 15,121.50-20,867.67-8,833.92

Finding the Fourth Proportional to 15,121.50, 20,867.67 and 8,833.92

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Solution

The fourth proportional to 15,121.50, 20,867.67 and 8,833.92 is: 12,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.50 : 20,867.67 = 8,833.92 : x
  2. Step 2: Convert to fraction form
    15,121.50/20,867.67 = 8,833.92/x
  3. Step 3: Cross multiply
    15,121.50x = 20,867.67 × 8,833.92
  4. Step 4: Simplify right side
    15,121.50x = 184,343,327.37
  5. Step 5: Solve for x
    x = 184,343,327.37/15,121.50
  6. Step 6: Final answer
    x = 12,190.81

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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.