Home / 20,136.30-30,171.45-10,261.98

Finding the Fourth Proportional to 20,136.30, 30,171.45 and 10,261.98

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Solution

The fourth proportional to 20,136.30, 30,171.45 and 10,261.98 is: 15,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.30 : 30,171.45 = 10,261.98 : x
  2. Step 2: Convert to fraction form
    20,136.30/30,171.45 = 10,261.98/x
  3. Step 3: Cross multiply
    20,136.30x = 30,171.45 × 10,261.98
  4. Step 4: Simplify right side
    20,136.30x = 309,618,816.47
  5. Step 5: Solve for x
    x = 309,618,816.47/20,136.30
  6. Step 6: Final answer
    x = 15,376.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.