Home / 12,607.12-18,910.68-5,215.60

Finding the Fourth Proportional to 12,607.12, 18,910.68 and 5,215.60

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Solution

The fourth proportional to 12,607.12, 18,910.68 and 5,215.60 is: 7,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.12 : 18,910.68 = 5,215.60 : x
  2. Step 2: Convert to fraction form
    12,607.12/18,910.68 = 5,215.60/x
  3. Step 3: Cross multiply
    12,607.12x = 18,910.68 × 5,215.60
  4. Step 4: Simplify right side
    12,607.12x = 98,630,542.61
  5. Step 5: Solve for x
    x = 98,630,542.61/12,607.12
  6. Step 6: Final answer
    x = 7,823.40

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Similar ratio
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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.