Home / 12,613.70-18,922.35-4,292.30

Finding the Fourth Proportional to 12,613.70, 18,922.35 and 4,292.30

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Solution

The fourth proportional to 12,613.70, 18,922.35 and 4,292.30 is: 6,439.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.70 : 18,922.35 = 4,292.30 : x
  2. Step 2: Convert to fraction form
    12,613.70/18,922.35 = 4,292.30/x
  3. Step 3: Cross multiply
    12,613.70x = 18,922.35 × 4,292.30
  4. Step 4: Simplify right side
    12,613.70x = 81,220,402.91
  5. Step 5: Solve for x
    x = 81,220,402.91/12,613.70
  6. Step 6: Final answer
    x = 6,439.06

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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.