Home / 38,131.40-52,619.95-21,136.39

Finding the Fourth Proportional to 38,131.40, 52,619.95 and 21,136.39

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Solution

The fourth proportional to 38,131.40, 52,619.95 and 21,136.39 is: 29,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,131.40 : 52,619.95 = 21,136.39 : x
  2. Step 2: Convert to fraction form
    38,131.40/52,619.95 = 21,136.39/x
  3. Step 3: Cross multiply
    38,131.40x = 52,619.95 × 21,136.39
  4. Step 4: Simplify right side
    38,131.40x = 1,112,195,784.98
  5. Step 5: Solve for x
    x = 1,112,195,784.98/38,131.40
  6. Step 6: Final answer
    x = 29,167.45

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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.