Home / 20,919.41-31,228.62-17,925.62

Finding the Fourth Proportional to 20,919.41, 31,228.62 and 17,925.62

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Solution

The fourth proportional to 20,919.41, 31,228.62 and 17,925.62 is: 26,759.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919.41 : 31,228.62 = 17,925.62 : x
  2. Step 2: Convert to fraction form
    20,919.41/31,228.62 = 17,925.62/x
  3. Step 3: Cross multiply
    20,919.41x = 31,228.62 × 17,925.62
  4. Step 4: Simplify right side
    20,919.41x = 559,792,375.24
  5. Step 5: Solve for x
    x = 559,792,375.24/20,919.41
  6. Step 6: Final answer
    x = 26,759.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.