Home / 20,864.52-28,795.41-11,913.30

Finding the Fourth Proportional to 20,864.52, 28,795.41 and 11,913.30

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Solution

The fourth proportional to 20,864.52, 28,795.41 and 11,913.30 is: 16,441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.52 : 28,795.41 = 11,913.30 : x
  2. Step 2: Convert to fraction form
    20,864.52/28,795.41 = 11,913.30/x
  3. Step 3: Cross multiply
    20,864.52x = 28,795.41 × 11,913.30
  4. Step 4: Simplify right side
    20,864.52x = 343,048,357.95
  5. Step 5: Solve for x
    x = 343,048,357.95/20,864.52
  6. Step 6: Final answer
    x = 16,441.71

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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.