Home / 13,883.20-19,165.20-8,581.12

Finding the Fourth Proportional to 13,883.20, 19,165.20 and 8,581.12

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Solution

The fourth proportional to 13,883.20, 19,165.20 and 8,581.12 is: 11,845.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.20 : 19,165.20 = 8,581.12 : x
  2. Step 2: Convert to fraction form
    13,883.20/19,165.20 = 8,581.12/x
  3. Step 3: Cross multiply
    13,883.20x = 19,165.20 × 8,581.12
  4. Step 4: Simplify right side
    13,883.20x = 164,458,881.02
  5. Step 5: Solve for x
    x = 164,458,881.02/13,883.20
  6. Step 6: Final answer
    x = 11,845.89

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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.