Home / 13,730.57-18,938.17-8,695.61

Finding the Fourth Proportional to 13,730.57, 18,938.17 and 8,695.61

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Solution

The fourth proportional to 13,730.57, 18,938.17 and 8,695.61 is: 11,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.57 : 18,938.17 = 8,695.61 : x
  2. Step 2: Convert to fraction form
    13,730.57/18,938.17 = 8,695.61/x
  3. Step 3: Cross multiply
    13,730.57x = 18,938.17 × 8,695.61
  4. Step 4: Simplify right side
    13,730.57x = 164,678,940.43
  5. Step 5: Solve for x
    x = 164,678,940.43/13,730.57
  6. Step 6: Final answer
    x = 11,993.60

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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.