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Finding the Fourth Proportional to 13,158.92, 18,157.02 and 7,853.42

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Solution

The fourth proportional to 13,158.92, 18,157.02 and 7,853.42 is: 10,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.92 : 18,157.02 = 7,853.42 : x
  2. Step 2: Convert to fraction form
    13,158.92/18,157.02 = 7,853.42/x
  3. Step 3: Cross multiply
    13,158.92x = 18,157.02 × 7,853.42
  4. Step 4: Simplify right side
    13,158.92x = 142,594,704.01
  5. Step 5: Solve for x
    x = 142,594,704.01/13,158.92
  6. Step 6: Final answer
    x = 10,836.35

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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.