Home / 12,640.30-17,452.86-8,166.70

Finding the Fourth Proportional to 12,640.30, 17,452.86 and 8,166.70

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Solution

The fourth proportional to 12,640.30, 17,452.86 and 8,166.70 is: 11,276.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.30 : 17,452.86 = 8,166.70 : x
  2. Step 2: Convert to fraction form
    12,640.30/17,452.86 = 8,166.70/x
  3. Step 3: Cross multiply
    12,640.30x = 17,452.86 × 8,166.70
  4. Step 4: Simplify right side
    12,640.30x = 142,532,271.76
  5. Step 5: Solve for x
    x = 142,532,271.76/12,640.30
  6. Step 6: Final answer
    x = 11,276.02

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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.