Home / 12,205.26-18,307.80-3,440.12

Finding the Fourth Proportional to 12,205.26, 18,307.80 and 3,440.12

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Solution

The fourth proportional to 12,205.26, 18,307.80 and 3,440.12 is: 5,160.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.26 : 18,307.80 = 3,440.12 : x
  2. Step 2: Convert to fraction form
    12,205.26/18,307.80 = 3,440.12/x
  3. Step 3: Cross multiply
    12,205.26x = 18,307.80 × 3,440.12
  4. Step 4: Simplify right side
    12,205.26x = 62,980,937.40
  5. Step 5: Solve for x
    x = 62,980,937.40/12,205.26
  6. Step 6: Final answer
    x = 5,160.15

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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.