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Finding the Fourth Proportional to 29,728.90, 41,053.65 and 19,136.92

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Solution

The fourth proportional to 29,728.90, 41,053.65 and 19,136.92 is: 26,426.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,728.90 : 41,053.65 = 19,136.92 : x
  2. Step 2: Convert to fraction form
    29,728.90/41,053.65 = 19,136.92/x
  3. Step 3: Cross multiply
    29,728.90x = 41,053.65 × 19,136.92
  4. Step 4: Simplify right side
    29,728.90x = 785,640,415.76
  5. Step 5: Solve for x
    x = 785,640,415.76/29,728.90
  6. Step 6: Final answer
    x = 26,426.82

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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.