Home / 13,971.26-19,279.37-8,305.71

Finding the Fourth Proportional to 13,971.26, 19,279.37 and 8,305.71

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Solution

The fourth proportional to 13,971.26, 19,279.37 and 8,305.71 is: 11,461.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.26 : 19,279.37 = 8,305.71 : x
  2. Step 2: Convert to fraction form
    13,971.26/19,279.37 = 8,305.71/x
  3. Step 3: Cross multiply
    13,971.26x = 19,279.37 × 8,305.71
  4. Step 4: Simplify right side
    13,971.26x = 160,128,883.64
  5. Step 5: Solve for x
    x = 160,128,883.64/13,971.26
  6. Step 6: Final answer
    x = 11,461.31

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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.