Home / 9,922.40-13,690.11-6,387.66

Finding the Fourth Proportional to 9,922.40, 13,690.11 and 6,387.66

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Solution

The fourth proportional to 9,922.40, 13,690.11 and 6,387.66 is: 8,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,922.40 : 13,690.11 = 6,387.66 : x
  2. Step 2: Convert to fraction form
    9,922.40/13,690.11 = 6,387.66/x
  3. Step 3: Cross multiply
    9,922.40x = 13,690.11 × 6,387.66
  4. Step 4: Simplify right side
    9,922.40x = 87,447,792.00
  5. Step 5: Solve for x
    x = 87,447,792.00/9,922.40
  6. Step 6: Final answer
    x = 8,813.17

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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.