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Finding the Fourth Proportional to 15,012.57, 22,518.86 and 3,919.16

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Solution

The fourth proportional to 15,012.57, 22,518.86 and 3,919.16 is: 5,878.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.57 : 22,518.86 = 3,919.16 : x
  2. Step 2: Convert to fraction form
    15,012.57/22,518.86 = 3,919.16/x
  3. Step 3: Cross multiply
    15,012.57x = 22,518.86 × 3,919.16
  4. Step 4: Simplify right side
    15,012.57x = 88,255,052.06
  5. Step 5: Solve for x
    x = 88,255,052.06/15,012.57
  6. Step 6: Final answer
    x = 5,878.74

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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.