Home / 29,122.98-40,136.42-21,151.37

Finding the Fourth Proportional to 29,122.98, 40,136.42 and 21,151.37

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Solution

The fourth proportional to 29,122.98, 40,136.42 and 21,151.37 is: 29,150.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,122.98 : 40,136.42 = 21,151.37 : x
  2. Step 2: Convert to fraction form
    29,122.98/40,136.42 = 21,151.37/x
  3. Step 3: Cross multiply
    29,122.98x = 40,136.42 × 21,151.37
  4. Step 4: Simplify right side
    29,122.98x = 848,939,963.46
  5. Step 5: Solve for x
    x = 848,939,963.46/29,122.98
  6. Step 6: Final answer
    x = 29,150.17

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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.