Home / 11,512.20-15,878.34-8,528.16

Finding the Fourth Proportional to 11,512.20, 15,878.34 and 8,528.16

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Solution

The fourth proportional to 11,512.20, 15,878.34 and 8,528.16 is: 11,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,512.20 : 15,878.34 = 8,528.16 : x
  2. Step 2: Convert to fraction form
    11,512.20/15,878.34 = 8,528.16/x
  3. Step 3: Cross multiply
    11,512.20x = 15,878.34 × 8,528.16
  4. Step 4: Simplify right side
    11,512.20x = 135,413,024.05
  5. Step 5: Solve for x
    x = 135,413,024.05/11,512.20
  6. Step 6: Final answer
    x = 11,762.57

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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.