Home / 12,240.21-18,363.03-3,920.70

Finding the Fourth Proportional to 12,240.21, 18,363.03 and 3,920.70

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Solution

The fourth proportional to 12,240.21, 18,363.03 and 3,920.70 is: 5,881.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.21 : 18,363.03 = 3,920.70 : x
  2. Step 2: Convert to fraction form
    12,240.21/18,363.03 = 3,920.70/x
  3. Step 3: Cross multiply
    12,240.21x = 18,363.03 × 3,920.70
  4. Step 4: Simplify right side
    12,240.21x = 71,995,931.72
  5. Step 5: Solve for x
    x = 71,995,931.72/12,240.21
  6. Step 6: Final answer
    x = 5,881.92

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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.