Home / 20,911.38-28,852.74-11,836.86

Finding the Fourth Proportional to 20,911.38, 28,852.74 and 11,836.86

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Solution

The fourth proportional to 20,911.38, 28,852.74 and 11,836.86 is: 16,332.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.38 : 28,852.74 = 11,836.86 : x
  2. Step 2: Convert to fraction form
    20,911.38/28,852.74 = 11,836.86/x
  3. Step 3: Cross multiply
    20,911.38x = 28,852.74 × 11,836.86
  4. Step 4: Simplify right side
    20,911.38x = 341,525,844.00
  5. Step 5: Solve for x
    x = 341,525,844.00/20,911.38
  6. Step 6: Final answer
    x = 16,332.06

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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.