Home / 20,136.51-27,777.19-18,711.03

Finding the Fourth Proportional to 20,136.51, 27,777.19 and 18,711.03

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Solution

The fourth proportional to 20,136.51, 27,777.19 and 18,711.03 is: 25,810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.51 : 27,777.19 = 18,711.03 : x
  2. Step 2: Convert to fraction form
    20,136.51/27,777.19 = 18,711.03/x
  3. Step 3: Cross multiply
    20,136.51x = 27,777.19 × 18,711.03
  4. Step 4: Simplify right side
    20,136.51x = 519,739,835.41
  5. Step 5: Solve for x
    x = 519,739,835.41/20,136.51
  6. Step 6: Final answer
    x = 25,810.82

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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.