Home / 12,205.29-18,308.21-3,440.01

Finding the Fourth Proportional to 12,205.29, 18,308.21 and 3,440.01

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Solution

The fourth proportional to 12,205.29, 18,308.21 and 3,440.01 is: 5,160.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.29 : 18,308.21 = 3,440.01 : x
  2. Step 2: Convert to fraction form
    12,205.29/18,308.21 = 3,440.01/x
  3. Step 3: Cross multiply
    12,205.29x = 18,308.21 × 3,440.01
  4. Step 4: Simplify right side
    12,205.29x = 62,980,425.48
  5. Step 5: Solve for x
    x = 62,980,425.48/12,205.29
  6. Step 6: Final answer
    x = 5,160.09

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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.