Home / 11,690.40-16,115.97-7,211.13

Finding the Fourth Proportional to 11,690.40, 16,115.97 and 7,211.13

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Solution

The fourth proportional to 11,690.40, 16,115.97 and 7,211.13 is: 9,941.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.40 : 16,115.97 = 7,211.13 : x
  2. Step 2: Convert to fraction form
    11,690.40/16,115.97 = 7,211.13/x
  3. Step 3: Cross multiply
    11,690.40x = 16,115.97 × 7,211.13
  4. Step 4: Simplify right side
    11,690.40x = 116,214,354.75
  5. Step 5: Solve for x
    x = 116,214,354.75/11,690.40
  6. Step 6: Final answer
    x = 9,941.01

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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.