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Finding the Fourth Proportional to 13,662.12, 18,853.14 and 7,693.74

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Solution

The fourth proportional to 13,662.12, 18,853.14 and 7,693.74 is: 10,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.12 : 18,853.14 = 7,693.74 : x
  2. Step 2: Convert to fraction form
    13,662.12/18,853.14 = 7,693.74/x
  3. Step 3: Cross multiply
    13,662.12x = 18,853.14 × 7,693.74
  4. Step 4: Simplify right side
    13,662.12x = 145,051,157.34
  5. Step 5: Solve for x
    x = 145,051,157.34/13,662.12
  6. Step 6: Final answer
    x = 10,617.03

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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.