Home / 13,612.16-20,412.12-6,214.88

Finding the Fourth Proportional to 13,612.16, 20,412.12 and 6,214.88

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Solution

The fourth proportional to 13,612.16, 20,412.12 and 6,214.88 is: 9,319.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.16 : 20,412.12 = 6,214.88 : x
  2. Step 2: Convert to fraction form
    13,612.16/20,412.12 = 6,214.88/x
  3. Step 3: Cross multiply
    13,612.16x = 20,412.12 × 6,214.88
  4. Step 4: Simplify right side
    13,612.16x = 126,858,876.35
  5. Step 5: Solve for x
    x = 126,858,876.35/13,612.16
  6. Step 6: Final answer
    x = 9,319.53

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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.