Home / 12,536.97-18,800.60-6,690.39

Finding the Fourth Proportional to 12,536.97, 18,800.60 and 6,690.39

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Solution

The fourth proportional to 12,536.97, 18,800.60 and 6,690.39 is: 10,032.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,536.97 : 18,800.60 = 6,690.39 : x
  2. Step 2: Convert to fraction form
    12,536.97/18,800.60 = 6,690.39/x
  3. Step 3: Cross multiply
    12,536.97x = 18,800.60 × 6,690.39
  4. Step 4: Simplify right side
    12,536.97x = 125,783,312.78
  5. Step 5: Solve for x
    x = 125,783,312.78/12,536.97
  6. Step 6: Final answer
    x = 10,032.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.