Home / 12,150.70-18,209.39-6,215.16

Finding the Fourth Proportional to 12,150.70, 18,209.39 and 6,215.16

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Solution

The fourth proportional to 12,150.70, 18,209.39 and 6,215.16 is: 9,314.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.70 : 18,209.39 = 6,215.16 : x
  2. Step 2: Convert to fraction form
    12,150.70/18,209.39 = 6,215.16/x
  3. Step 3: Cross multiply
    12,150.70x = 18,209.39 × 6,215.16
  4. Step 4: Simplify right side
    12,150.70x = 113,174,150.23
  5. Step 5: Solve for x
    x = 113,174,150.23/12,150.70
  6. Step 6: Final answer
    x = 9,314.21

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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.