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Finding the Fourth Proportional to 13,591.63, 18,754.95 and 7,622.07

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Solution

The fourth proportional to 13,591.63, 18,754.95 and 7,622.07 is: 10,517.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.63 : 18,754.95 = 7,622.07 : x
  2. Step 2: Convert to fraction form
    13,591.63/18,754.95 = 7,622.07/x
  3. Step 3: Cross multiply
    13,591.63x = 18,754.95 × 7,622.07
  4. Step 4: Simplify right side
    13,591.63x = 142,951,541.75
  5. Step 5: Solve for x
    x = 142,951,541.75/13,591.63
  6. Step 6: Final answer
    x = 10,517.62

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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.