Home / 11,909.15-16,433.55-6,603.95

Finding the Fourth Proportional to 11,909.15, 16,433.55 and 6,603.95

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Solution

The fourth proportional to 11,909.15, 16,433.55 and 6,603.95 is: 9,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.15 : 16,433.55 = 6,603.95 : x
  2. Step 2: Convert to fraction form
    11,909.15/16,433.55 = 6,603.95/x
  3. Step 3: Cross multiply
    11,909.15x = 16,433.55 × 6,603.95
  4. Step 4: Simplify right side
    11,909.15x = 108,526,342.52
  5. Step 5: Solve for x
    x = 108,526,342.52/11,909.15
  6. Step 6: Final answer
    x = 9,112.85

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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.