Home / 20,136.02-27,775.15-12,975.42

Finding the Fourth Proportional to 20,136.02, 27,775.15 and 12,975.42

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Solution

The fourth proportional to 20,136.02, 27,775.15 and 12,975.42 is: 17,897.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.02 : 27,775.15 = 12,975.42 : x
  2. Step 2: Convert to fraction form
    20,136.02/27,775.15 = 12,975.42/x
  3. Step 3: Cross multiply
    20,136.02x = 27,775.15 × 12,975.42
  4. Step 4: Simplify right side
    20,136.02x = 360,394,204.37
  5. Step 5: Solve for x
    x = 360,394,204.37/20,136.02
  6. Step 6: Final answer
    x = 17,897.98

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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.