Home / 12,216.42-18,314.37-8,507.70

Finding the Fourth Proportional to 12,216.42, 18,314.37 and 8,507.70

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Solution

The fourth proportional to 12,216.42, 18,314.37 and 8,507.70 is: 12,754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.42 : 18,314.37 = 8,507.70 : x
  2. Step 2: Convert to fraction form
    12,216.42/18,314.37 = 8,507.70/x
  3. Step 3: Cross multiply
    12,216.42x = 18,314.37 × 8,507.70
  4. Step 4: Simplify right side
    12,216.42x = 155,813,165.65
  5. Step 5: Solve for x
    x = 155,813,165.65/12,216.42
  6. Step 6: Final answer
    x = 12,754.40

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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.