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Finding the Fourth Proportional to 12,208.66, 18,312.99 and 5,631.26

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Solution

The fourth proportional to 12,208.66, 18,312.99 and 5,631.26 is: 8,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.66 : 18,312.99 = 5,631.26 : x
  2. Step 2: Convert to fraction form
    12,208.66/18,312.99 = 5,631.26/x
  3. Step 3: Cross multiply
    12,208.66x = 18,312.99 × 5,631.26
  4. Step 4: Simplify right side
    12,208.66x = 103,125,208.28
  5. Step 5: Solve for x
    x = 103,125,208.28/12,208.66
  6. Step 6: Final answer
    x = 8,446.89

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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.