Home / 12,124.66-18,206.12-7,216.21

Finding the Fourth Proportional to 12,124.66, 18,206.12 and 7,216.21

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Solution

The fourth proportional to 12,124.66, 18,206.12 and 7,216.21 is: 10,835.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.66 : 18,206.12 = 7,216.21 : x
  2. Step 2: Convert to fraction form
    12,124.66/18,206.12 = 7,216.21/x
  3. Step 3: Cross multiply
    12,124.66x = 18,206.12 × 7,216.21
  4. Step 4: Simplify right side
    12,124.66x = 131,379,185.21
  5. Step 5: Solve for x
    x = 131,379,185.21/12,124.66
  6. Step 6: Final answer
    x = 10,835.70

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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.