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Finding the Fourth Proportional to 15,012.71, 22,519.06 and 3,919.30

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Solution

The fourth proportional to 15,012.71, 22,519.06 and 3,919.30 is: 5,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.71 : 22,519.06 = 3,919.30 : x
  2. Step 2: Convert to fraction form
    15,012.71/22,519.06 = 3,919.30/x
  3. Step 3: Cross multiply
    15,012.71x = 22,519.06 × 3,919.30
  4. Step 4: Simplify right side
    15,012.71x = 88,258,951.86
  5. Step 5: Solve for x
    x = 88,258,951.86/15,012.71
  6. Step 6: Final answer
    x = 5,878.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.