Home / 11,909.11-16,434.37-6,603.80

Finding the Fourth Proportional to 11,909.11, 16,434.37 and 6,603.80

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Solution

The fourth proportional to 11,909.11, 16,434.37 and 6,603.80 is: 9,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.11 : 16,434.37 = 6,603.80 : x
  2. Step 2: Convert to fraction form
    11,909.11/16,434.37 = 6,603.80/x
  3. Step 3: Cross multiply
    11,909.11x = 16,434.37 × 6,603.80
  4. Step 4: Simplify right side
    11,909.11x = 108,529,292.61
  5. Step 5: Solve for x
    x = 108,529,292.61/11,909.11
  6. Step 6: Final answer
    x = 9,113.13

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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.