Home / 14,212.20-21,318.30-8,375.40

Finding the Fourth Proportional to 14,212.20, 21,318.30 and 8,375.40

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Solution

The fourth proportional to 14,212.20, 21,318.30 and 8,375.40 is: 12,563.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,212.20 : 21,318.30 = 8,375.40 : x
  2. Step 2: Convert to fraction form
    14,212.20/21,318.30 = 8,375.40/x
  3. Step 3: Cross multiply
    14,212.20x = 21,318.30 × 8,375.40
  4. Step 4: Simplify right side
    14,212.20x = 178,549,289.82
  5. Step 5: Solve for x
    x = 178,549,289.82/14,212.20
  6. Step 6: Final answer
    x = 12,563.10

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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.