Home / 20,465.99-28,244.70-11,512.95

Finding the Fourth Proportional to 20,465.99, 28,244.70 and 11,512.95

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Solution

The fourth proportional to 20,465.99, 28,244.70 and 11,512.95 is: 15,888.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.99 : 28,244.70 = 11,512.95 : x
  2. Step 2: Convert to fraction form
    20,465.99/28,244.70 = 11,512.95/x
  3. Step 3: Cross multiply
    20,465.99x = 28,244.70 × 11,512.95
  4. Step 4: Simplify right side
    20,465.99x = 325,179,761.30
  5. Step 5: Solve for x
    x = 325,179,761.30/20,465.99
  6. Step 6: Final answer
    x = 15,888.79

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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.