Home / 14,291.40-19,755.18-11,919.72

Finding the Fourth Proportional to 14,291.40, 19,755.18 and 11,919.72

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Solution

The fourth proportional to 14,291.40, 19,755.18 and 11,919.72 is: 16,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,291.40 : 19,755.18 = 11,919.72 : x
  2. Step 2: Convert to fraction form
    14,291.40/19,755.18 = 11,919.72/x
  3. Step 3: Cross multiply
    14,291.40x = 19,755.18 × 11,919.72
  4. Step 4: Simplify right side
    14,291.40x = 235,476,214.15
  5. Step 5: Solve for x
    x = 235,476,214.15/14,291.40
  6. Step 6: Final answer
    x = 16,476.78

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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.