Home / 38,131.08-52,619.54-21,136.90

Finding the Fourth Proportional to 38,131.08, 52,619.54 and 21,136.90

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Solution

The fourth proportional to 38,131.08, 52,619.54 and 21,136.90 is: 29,168.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,131.08 : 52,619.54 = 21,136.90 : x
  2. Step 2: Convert to fraction form
    38,131.08/52,619.54 = 21,136.90/x
  3. Step 3: Cross multiply
    38,131.08x = 52,619.54 × 21,136.90
  4. Step 4: Simplify right side
    38,131.08x = 1,112,213,955.03
  5. Step 5: Solve for x
    x = 1,112,213,955.03/38,131.08
  6. Step 6: Final answer
    x = 29,168.17

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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.