Home / 28,155.15-38,861.03-16,831.36

Finding the Fourth Proportional to 28,155.15, 38,861.03 and 16,831.36

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Solution

The fourth proportional to 28,155.15, 38,861.03 and 16,831.36 is: 23,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.15 : 38,861.03 = 16,831.36 : x
  2. Step 2: Convert to fraction form
    28,155.15/38,861.03 = 16,831.36/x
  3. Step 3: Cross multiply
    28,155.15x = 38,861.03 × 16,831.36
  4. Step 4: Simplify right side
    28,155.15x = 654,083,930.83
  5. Step 5: Solve for x
    x = 654,083,930.83/28,155.15
  6. Step 6: Final answer
    x = 23,231.41

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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.