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Finding the Fourth Proportional to 18,441.76, 25,446.18 and 11,270.20

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Solution

The fourth proportional to 18,441.76, 25,446.18 and 11,270.20 is: 15,550.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441.76 : 25,446.18 = 11,270.20 : x
  2. Step 2: Convert to fraction form
    18,441.76/25,446.18 = 11,270.20/x
  3. Step 3: Cross multiply
    18,441.76x = 25,446.18 × 11,270.20
  4. Step 4: Simplify right side
    18,441.76x = 286,783,537.84
  5. Step 5: Solve for x
    x = 286,783,537.84/18,441.76
  6. Step 6: Final answer
    x = 15,550.77

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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.