Home / 12,130.20-18,070.11-11,763.09

Finding the Fourth Proportional to 12,130.20, 18,070.11 and 11,763.09

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Solution

The fourth proportional to 12,130.20, 18,070.11 and 11,763.09 is: 17,523.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.20 : 18,070.11 = 11,763.09 : x
  2. Step 2: Convert to fraction form
    12,130.20/18,070.11 = 11,763.09/x
  3. Step 3: Cross multiply
    12,130.20x = 18,070.11 × 11,763.09
  4. Step 4: Simplify right side
    12,130.20x = 212,560,330.24
  5. Step 5: Solve for x
    x = 212,560,330.24/12,130.20
  6. Step 6: Final answer
    x = 17,523.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.