Home / 12,630.20-18,908.58-7,349.12

Finding the Fourth Proportional to 12,630.20, 18,908.58 and 7,349.12

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Solution

The fourth proportional to 12,630.20, 18,908.58 and 7,349.12 is: 11,002.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.20 : 18,908.58 = 7,349.12 : x
  2. Step 2: Convert to fraction form
    12,630.20/18,908.58 = 7,349.12/x
  3. Step 3: Cross multiply
    12,630.20x = 18,908.58 × 7,349.12
  4. Step 4: Simplify right side
    12,630.20x = 138,961,328.91
  5. Step 5: Solve for x
    x = 138,961,328.91/12,630.20
  6. Step 6: Final answer
    x = 11,002.31

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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.