Home / 12,146.85-18,220.95-3,827.10

Finding the Fourth Proportional to 12,146.85, 18,220.95 and 3,827.10

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Solution

The fourth proportional to 12,146.85, 18,220.95 and 3,827.10 is: 5,740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.85 : 18,220.95 = 3,827.10 : x
  2. Step 2: Convert to fraction form
    12,146.85/18,220.95 = 3,827.10/x
  3. Step 3: Cross multiply
    12,146.85x = 18,220.95 × 3,827.10
  4. Step 4: Simplify right side
    12,146.85x = 69,733,397.75
  5. Step 5: Solve for x
    x = 69,733,397.75/12,146.85
  6. Step 6: Final answer
    x = 5,740.86

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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.