Home / 12,767.45-17,619.12-7,102.55

Finding the Fourth Proportional to 12,767.45, 17,619.12 and 7,102.55

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Solution

The fourth proportional to 12,767.45, 17,619.12 and 7,102.55 is: 9,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,767.45 : 17,619.12 = 7,102.55 : x
  2. Step 2: Convert to fraction form
    12,767.45/17,619.12 = 7,102.55/x
  3. Step 3: Cross multiply
    12,767.45x = 17,619.12 × 7,102.55
  4. Step 4: Simplify right side
    12,767.45x = 125,140,724.80
  5. Step 5: Solve for x
    x = 125,140,724.80/12,767.45
  6. Step 6: Final answer
    x = 9,801.55

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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.