Home / 12,019.35-18,031.70-3,700.11

Finding the Fourth Proportional to 12,019.35, 18,031.70 and 3,700.11

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Solution

The fourth proportional to 12,019.35, 18,031.70 and 3,700.11 is: 5,550.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,019.35 : 18,031.70 = 3,700.11 : x
  2. Step 2: Convert to fraction form
    12,019.35/18,031.70 = 3,700.11/x
  3. Step 3: Cross multiply
    12,019.35x = 18,031.70 × 3,700.11
  4. Step 4: Simplify right side
    12,019.35x = 66,719,273.49
  5. Step 5: Solve for x
    x = 66,719,273.49/12,019.35
  6. Step 6: Final answer
    x = 5,550.99

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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.