Home / 20,835.83-31,239.86-11,480.24

Finding the Fourth Proportional to 20,835.83, 31,239.86 and 11,480.24

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Solution

The fourth proportional to 20,835.83, 31,239.86 and 11,480.24 is: 17,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.83 : 31,239.86 = 11,480.24 : x
  2. Step 2: Convert to fraction form
    20,835.83/31,239.86 = 11,480.24/x
  3. Step 3: Cross multiply
    20,835.83x = 31,239.86 × 11,480.24
  4. Step 4: Simplify right side
    20,835.83x = 358,640,876.77
  5. Step 5: Solve for x
    x = 358,640,876.77/20,835.83
  6. Step 6: Final answer
    x = 17,212.70

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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.