Home / 18,730.45-25,836.64-11,171.73

Finding the Fourth Proportional to 18,730.45, 25,836.64 and 11,171.73

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Solution

The fourth proportional to 18,730.45, 25,836.64 and 11,171.73 is: 15,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.45 : 25,836.64 = 11,171.73 : x
  2. Step 2: Convert to fraction form
    18,730.45/25,836.64 = 11,171.73/x
  3. Step 3: Cross multiply
    18,730.45x = 25,836.64 × 11,171.73
  4. Step 4: Simplify right side
    18,730.45x = 288,639,966.19
  5. Step 5: Solve for x
    x = 288,639,966.19/18,730.45
  6. Step 6: Final answer
    x = 15,410.20

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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.