Home / 15,205.54-20,977.68-8,831.04

Finding the Fourth Proportional to 15,205.54, 20,977.68 and 8,831.04

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Solution

The fourth proportional to 15,205.54, 20,977.68 and 8,831.04 is: 12,183.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,205.54 : 20,977.68 = 8,831.04 : x
  2. Step 2: Convert to fraction form
    15,205.54/20,977.68 = 8,831.04/x
  3. Step 3: Cross multiply
    15,205.54x = 20,977.68 × 8,831.04
  4. Step 4: Simplify right side
    15,205.54x = 185,254,731.19
  5. Step 5: Solve for x
    x = 185,254,731.19/15,205.54
  6. Step 6: Final answer
    x = 12,183.37

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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.