Home / 10,956.57-15,120.83-6,240.85

Finding the Fourth Proportional to 10,956.57, 15,120.83 and 6,240.85

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Solution

The fourth proportional to 10,956.57, 15,120.83 and 6,240.85 is: 8,612.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.57 : 15,120.83 = 6,240.85 : x
  2. Step 2: Convert to fraction form
    10,956.57/15,120.83 = 6,240.85/x
  3. Step 3: Cross multiply
    10,956.57x = 15,120.83 × 6,240.85
  4. Step 4: Simplify right side
    10,956.57x = 94,366,774.60
  5. Step 5: Solve for x
    x = 94,366,774.60/10,956.57
  6. Step 6: Final answer
    x = 8,612.81

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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.