Home / 12,452.70-18,642.60-8,297.40

Finding the Fourth Proportional to 12,452.70, 18,642.60 and 8,297.40

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Solution

The fourth proportional to 12,452.70, 18,642.60 and 8,297.40 is: 12,421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,452.70 : 18,642.60 = 8,297.40 : x
  2. Step 2: Convert to fraction form
    12,452.70/18,642.60 = 8,297.40/x
  3. Step 3: Cross multiply
    12,452.70x = 18,642.60 × 8,297.40
  4. Step 4: Simplify right side
    12,452.70x = 154,685,109.24
  5. Step 5: Solve for x
    x = 154,685,109.24/12,452.70
  6. Step 6: Final answer
    x = 12,421.81

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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.