Home / 20,136.26-27,776.84-18,710.78

Finding the Fourth Proportional to 20,136.26, 27,776.84 and 18,710.78

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Solution

The fourth proportional to 20,136.26, 27,776.84 and 18,710.78 is: 25,810.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.26 : 27,776.84 = 18,710.78 : x
  2. Step 2: Convert to fraction form
    20,136.26/27,776.84 = 18,710.78/x
  3. Step 3: Cross multiply
    20,136.26x = 27,776.84 × 18,710.78
  4. Step 4: Simplify right side
    20,136.26x = 519,726,458.55
  5. Step 5: Solve for x
    x = 519,726,458.55/20,136.26
  6. Step 6: Final answer
    x = 25,810.47

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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.