Home / 10,371.52-14,308.64-8,129.44

Finding the Fourth Proportional to 10,371.52, 14,308.64 and 8,129.44

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Solution

The fourth proportional to 10,371.52, 14,308.64 and 8,129.44 is: 11,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,371.52 : 14,308.64 = 8,129.44 : x
  2. Step 2: Convert to fraction form
    10,371.52/14,308.64 = 8,129.44/x
  3. Step 3: Cross multiply
    10,371.52x = 14,308.64 × 8,129.44
  4. Step 4: Simplify right side
    10,371.52x = 116,321,230.36
  5. Step 5: Solve for x
    x = 116,321,230.36/10,371.52
  6. Step 6: Final answer
    x = 11,215.45

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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.