Home / 10,689.58-16,003.20-7,135.66

Finding the Fourth Proportional to 10,689.58, 16,003.20 and 7,135.66

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Solution

The fourth proportional to 10,689.58, 16,003.20 and 7,135.66 is: 10,682.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,689.58 : 16,003.20 = 7,135.66 : x
  2. Step 2: Convert to fraction form
    10,689.58/16,003.20 = 7,135.66/x
  3. Step 3: Cross multiply
    10,689.58x = 16,003.20 × 7,135.66
  4. Step 4: Simplify right side
    10,689.58x = 114,193,394.11
  5. Step 5: Solve for x
    x = 114,193,394.11/10,689.58
  6. Step 6: Final answer
    x = 10,682.68

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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.