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Finding the Fourth Proportional to 13,591.64, 18,756.22 and 7,623.30

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Solution

The fourth proportional to 13,591.64, 18,756.22 and 7,623.30 is: 10,520.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.64 : 18,756.22 = 7,623.30 : x
  2. Step 2: Convert to fraction form
    13,591.64/18,756.22 = 7,623.30/x
  3. Step 3: Cross multiply
    13,591.64x = 18,756.22 × 7,623.30
  4. Step 4: Simplify right side
    13,591.64x = 142,984,291.93
  5. Step 5: Solve for x
    x = 142,984,291.93/13,591.64
  6. Step 6: Final answer
    x = 10,520.02

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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.