Home / 13,156.92-18,154.26-7,851.42

Finding the Fourth Proportional to 13,156.92, 18,154.26 and 7,851.42

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Solution

The fourth proportional to 13,156.92, 18,154.26 and 7,851.42 is: 10,833.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.92 : 18,154.26 = 7,851.42 : x
  2. Step 2: Convert to fraction form
    13,156.92/18,154.26 = 7,851.42/x
  3. Step 3: Cross multiply
    13,156.92x = 18,154.26 × 7,851.42
  4. Step 4: Simplify right side
    13,156.92x = 142,536,720.05
  5. Step 5: Solve for x
    x = 142,536,720.05/13,156.92
  6. Step 6: Final answer
    x = 10,833.59

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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.