Home / 11,909.90-16,435.10-6,604.61

Finding the Fourth Proportional to 11,909.90, 16,435.10 and 6,604.61

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Solution

The fourth proportional to 11,909.90, 16,435.10 and 6,604.61 is: 9,114.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.90 : 16,435.10 = 6,604.61 : x
  2. Step 2: Convert to fraction form
    11,909.90/16,435.10 = 6,604.61/x
  3. Step 3: Cross multiply
    11,909.90x = 16,435.10 × 6,604.61
  4. Step 4: Simplify right side
    11,909.90x = 108,547,360.15
  5. Step 5: Solve for x
    x = 108,547,360.15/11,909.90
  6. Step 6: Final answer
    x = 9,114.04

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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.