Home / 9,212.92-13,730.04-8,917.72

Finding the Fourth Proportional to 9,212.92, 13,730.04 and 8,917.72

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Solution

The fourth proportional to 9,212.92, 13,730.04 and 8,917.72 is: 13,290.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,212.92 : 13,730.04 = 8,917.72 : x
  2. Step 2: Convert to fraction form
    9,212.92/13,730.04 = 8,917.72/x
  3. Step 3: Cross multiply
    9,212.92x = 13,730.04 × 8,917.72
  4. Step 4: Simplify right side
    9,212.92x = 122,440,652.31
  5. Step 5: Solve for x
    x = 122,440,652.31/9,212.92
  6. Step 6: Final answer
    x = 13,290.10

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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.