Home / 13,449.92-18,556.32-8,730.56

Finding the Fourth Proportional to 13,449.92, 18,556.32 and 8,730.56

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Solution

The fourth proportional to 13,449.92, 18,556.32 and 8,730.56 is: 12,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.92 : 18,556.32 = 8,730.56 : x
  2. Step 2: Convert to fraction form
    13,449.92/18,556.32 = 8,730.56/x
  3. Step 3: Cross multiply
    13,449.92x = 18,556.32 × 8,730.56
  4. Step 4: Simplify right side
    13,449.92x = 162,007,065.14
  5. Step 5: Solve for x
    x = 162,007,065.14/13,449.92
  6. Step 6: Final answer
    x = 12,045.21

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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.