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Finding the Fourth Proportional to 13,653.41, 18,835.83 and 7,829.42

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Solution

The fourth proportional to 13,653.41, 18,835.83 and 7,829.42 is: 10,801.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.41 : 18,835.83 = 7,829.42 : x
  2. Step 2: Convert to fraction form
    13,653.41/18,835.83 = 7,829.42/x
  3. Step 3: Cross multiply
    13,653.41x = 18,835.83 × 7,829.42
  4. Step 4: Simplify right side
    13,653.41x = 147,473,624.12
  5. Step 5: Solve for x
    x = 147,473,624.12/13,653.41
  6. Step 6: Final answer
    x = 10,801.23

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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.