Home / 18,688.62-25,789.29-10,730.64

Finding the Fourth Proportional to 18,688.62, 25,789.29 and 10,730.64

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Solution

The fourth proportional to 18,688.62, 25,789.29 and 10,730.64 is: 14,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.62 : 25,789.29 = 10,730.64 : x
  2. Step 2: Convert to fraction form
    18,688.62/25,789.29 = 10,730.64/x
  3. Step 3: Cross multiply
    18,688.62x = 25,789.29 × 10,730.64
  4. Step 4: Simplify right side
    18,688.62x = 276,735,586.85
  5. Step 5: Solve for x
    x = 276,735,586.85/18,688.62
  6. Step 6: Final answer
    x = 14,807.71

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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.