Home / 20,955.93-28,919.48-11,524.70

Finding the Fourth Proportional to 20,955.93, 28,919.48 and 11,524.70

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Solution

The fourth proportional to 20,955.93, 28,919.48 and 11,524.70 is: 15,904.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.93 : 28,919.48 = 11,524.70 : x
  2. Step 2: Convert to fraction form
    20,955.93/28,919.48 = 11,524.70/x
  3. Step 3: Cross multiply
    20,955.93x = 28,919.48 × 11,524.70
  4. Step 4: Simplify right side
    20,955.93x = 333,288,128.94
  5. Step 5: Solve for x
    x = 333,288,128.94/20,955.93
  6. Step 6: Final answer
    x = 15,904.24

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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.