Home / 13,154.47-18,147.17-7,847.35

Finding the Fourth Proportional to 13,154.47, 18,147.17 and 7,847.35

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Solution

The fourth proportional to 13,154.47, 18,147.17 and 7,847.35 is: 10,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.47 : 18,147.17 = 7,847.35 : x
  2. Step 2: Convert to fraction form
    13,154.47/18,147.17 = 7,847.35/x
  3. Step 3: Cross multiply
    13,154.47x = 18,147.17 × 7,847.35
  4. Step 4: Simplify right side
    13,154.47x = 142,407,168.75
  5. Step 5: Solve for x
    x = 142,407,168.75/13,154.47
  6. Step 6: Final answer
    x = 10,825.76

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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.