Home / 12,136.20-18,204.30-10,678.20

Finding the Fourth Proportional to 12,136.20, 18,204.30 and 10,678.20

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Solution

The fourth proportional to 12,136.20, 18,204.30 and 10,678.20 is: 16,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.20 : 18,204.30 = 10,678.20 : x
  2. Step 2: Convert to fraction form
    12,136.20/18,204.30 = 10,678.20/x
  3. Step 3: Cross multiply
    12,136.20x = 18,204.30 × 10,678.20
  4. Step 4: Simplify right side
    12,136.20x = 194,389,156.26
  5. Step 5: Solve for x
    x = 194,389,156.26/12,136.20
  6. Step 6: Final answer
    x = 16,017.30

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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.