Home / 13,901.99-19,185.53-8,240.09

Finding the Fourth Proportional to 13,901.99, 19,185.53 and 8,240.09

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Solution

The fourth proportional to 13,901.99, 19,185.53 and 8,240.09 is: 11,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.99 : 19,185.53 = 8,240.09 : x
  2. Step 2: Convert to fraction form
    13,901.99/19,185.53 = 8,240.09/x
  3. Step 3: Cross multiply
    13,901.99x = 19,185.53 × 8,240.09
  4. Step 4: Simplify right side
    13,901.99x = 158,090,356.77
  5. Step 5: Solve for x
    x = 158,090,356.77/13,901.99
  6. Step 6: Final answer
    x = 11,371.78

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Double scale
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Similar ratio
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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.