Home / 20,292.32-28,003.32-11,339.80

Finding the Fourth Proportional to 20,292.32, 28,003.32 and 11,339.80

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Solution

The fourth proportional to 20,292.32, 28,003.32 and 11,339.80 is: 15,648.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.32 : 28,003.32 = 11,339.80 : x
  2. Step 2: Convert to fraction form
    20,292.32/28,003.32 = 11,339.80/x
  3. Step 3: Cross multiply
    20,292.32x = 28,003.32 × 11,339.80
  4. Step 4: Simplify right side
    20,292.32x = 317,551,978.13
  5. Step 5: Solve for x
    x = 317,551,978.13/20,292.32
  6. Step 6: Final answer
    x = 15,648.87

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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.