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Finding the Fourth Proportional to 12,622.84, 18,934.26 and 5,225.31

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Solution

The fourth proportional to 12,622.84, 18,934.26 and 5,225.31 is: 7,837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.84 : 18,934.26 = 5,225.31 : x
  2. Step 2: Convert to fraction form
    12,622.84/18,934.26 = 5,225.31/x
  3. Step 3: Cross multiply
    12,622.84x = 18,934.26 × 5,225.31
  4. Step 4: Simplify right side
    12,622.84x = 98,937,358.53
  5. Step 5: Solve for x
    x = 98,937,358.53/12,622.84
  6. Step 6: Final answer
    x = 7,837.97

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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.