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Finding the Fourth Proportional to 13,741.61, 18,963.47 and 7,454.03

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Solution

The fourth proportional to 13,741.61, 18,963.47 and 7,454.03 is: 10,286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,741.61 : 18,963.47 = 7,454.03 : x
  2. Step 2: Convert to fraction form
    13,741.61/18,963.47 = 7,454.03/x
  3. Step 3: Cross multiply
    13,741.61x = 18,963.47 × 7,454.03
  4. Step 4: Simplify right side
    13,741.61x = 141,354,237.01
  5. Step 5: Solve for x
    x = 141,354,237.01/13,741.61
  6. Step 6: Final answer
    x = 10,286.58

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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.