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Finding the Fourth Proportional to 13,740.42, 20,610.06 and 6,342.42

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Solution

The fourth proportional to 13,740.42, 20,610.06 and 6,342.42 is: 9,513.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.42 : 20,610.06 = 6,342.42 : x
  2. Step 2: Convert to fraction form
    13,740.42/20,610.06 = 6,342.42/x
  3. Step 3: Cross multiply
    13,740.42x = 20,610.06 × 6,342.42
  4. Step 4: Simplify right side
    13,740.42x = 130,717,656.75
  5. Step 5: Solve for x
    x = 130,717,656.75/13,740.42
  6. Step 6: Final answer
    x = 9,513.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.