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Finding the Fourth Proportional to 15,215.25, 22,821.03 and 4,685.25

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Solution

The fourth proportional to 15,215.25, 22,821.03 and 4,685.25 is: 7,027.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.25 : 22,821.03 = 4,685.25 : x
  2. Step 2: Convert to fraction form
    15,215.25/22,821.03 = 4,685.25/x
  3. Step 3: Cross multiply
    15,215.25x = 22,821.03 × 4,685.25
  4. Step 4: Simplify right side
    15,215.25x = 106,922,230.81
  5. Step 5: Solve for x
    x = 106,922,230.81/15,215.25
  6. Step 6: Final answer
    x = 7,027.31

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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.