Home / 13,107.62-18,088.60-7,730.12

Finding the Fourth Proportional to 13,107.62, 18,088.60 and 7,730.12

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Solution

The fourth proportional to 13,107.62, 18,088.60 and 7,730.12 is: 10,667.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.62 : 18,088.60 = 7,730.12 : x
  2. Step 2: Convert to fraction form
    13,107.62/18,088.60 = 7,730.12/x
  3. Step 3: Cross multiply
    13,107.62x = 18,088.60 × 7,730.12
  4. Step 4: Simplify right side
    13,107.62x = 139,826,987.27
  5. Step 5: Solve for x
    x = 139,826,987.27/13,107.62
  6. Step 6: Final answer
    x = 10,667.61

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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.