Home / 12,114.90-18,172.35-11,240.10

Finding the Fourth Proportional to 12,114.90, 18,172.35 and 11,240.10

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Solution

The fourth proportional to 12,114.90, 18,172.35 and 11,240.10 is: 16,860.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.90 : 18,172.35 = 11,240.10 : x
  2. Step 2: Convert to fraction form
    12,114.90/18,172.35 = 11,240.10/x
  3. Step 3: Cross multiply
    12,114.90x = 18,172.35 × 11,240.10
  4. Step 4: Simplify right side
    12,114.90x = 204,259,031.24
  5. Step 5: Solve for x
    x = 204,259,031.24/12,114.90
  6. Step 6: Final answer
    x = 16,860.15

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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.