Home / 20,696.45-28,569.38-20,392.70

Finding the Fourth Proportional to 20,696.45, 28,569.38 and 20,392.70

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Solution

The fourth proportional to 20,696.45, 28,569.38 and 20,392.70 is: 28,150.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.45 : 28,569.38 = 20,392.70 : x
  2. Step 2: Convert to fraction form
    20,696.45/28,569.38 = 20,392.70/x
  3. Step 3: Cross multiply
    20,696.45x = 28,569.38 × 20,392.70
  4. Step 4: Simplify right side
    20,696.45x = 582,606,550.72
  5. Step 5: Solve for x
    x = 582,606,550.72/20,696.45
  6. Step 6: Final answer
    x = 28,150.08

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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.