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Finding the Fourth Proportional to 18,272.70, 25,215.14 and 10,313.84

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Solution

The fourth proportional to 18,272.70, 25,215.14 and 10,313.84 is: 14,232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.70 : 25,215.14 = 10,313.84 : x
  2. Step 2: Convert to fraction form
    18,272.70/25,215.14 = 10,313.84/x
  3. Step 3: Cross multiply
    18,272.70x = 25,215.14 × 10,313.84
  4. Step 4: Simplify right side
    18,272.70x = 260,064,919.54
  5. Step 5: Solve for x
    x = 260,064,919.54/18,272.70
  6. Step 6: Final answer
    x = 14,232.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.