Home / 11,989.42-16,555.84-7,520.85

Finding the Fourth Proportional to 11,989.42, 16,555.84 and 7,520.85

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Solution

The fourth proportional to 11,989.42, 16,555.84 and 7,520.85 is: 10,385.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.42 : 16,555.84 = 7,520.85 : x
  2. Step 2: Convert to fraction form
    11,989.42/16,555.84 = 7,520.85/x
  3. Step 3: Cross multiply
    11,989.42x = 16,555.84 × 7,520.85
  4. Step 4: Simplify right side
    11,989.42x = 124,514,012.77
  5. Step 5: Solve for x
    x = 124,514,012.77/11,989.42
  6. Step 6: Final answer
    x = 10,385.33

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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.