Home / 11,738.40-16,199.15-7,021.77

Finding the Fourth Proportional to 11,738.40, 16,199.15 and 7,021.77

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Solution

The fourth proportional to 11,738.40, 16,199.15 and 7,021.77 is: 9,690.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,738.40 : 16,199.15 = 7,021.77 : x
  2. Step 2: Convert to fraction form
    11,738.40/16,199.15 = 7,021.77/x
  3. Step 3: Cross multiply
    11,738.40x = 16,199.15 × 7,021.77
  4. Step 4: Simplify right side
    11,738.40x = 113,746,705.50
  5. Step 5: Solve for x
    x = 113,746,705.50/11,738.40
  6. Step 6: Final answer
    x = 9,690.14

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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.