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Finding the Fourth Proportional to 13,723.17, 18,937.99 and 7,435.55

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Solution

The fourth proportional to 13,723.17, 18,937.99 and 7,435.55 is: 10,261.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.17 : 18,937.99 = 7,435.55 : x
  2. Step 2: Convert to fraction form
    13,723.17/18,937.99 = 7,435.55/x
  3. Step 3: Cross multiply
    13,723.17x = 18,937.99 × 7,435.55
  4. Step 4: Simplify right side
    13,723.17x = 140,814,333.10
  5. Step 5: Solve for x
    x = 140,814,333.10/13,723.17
  6. Step 6: Final answer
    x = 10,261.06

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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.