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Finding the Fourth Proportional to 13,585.50, 18,730.44 and 8,796.93

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Solution

The fourth proportional to 13,585.50, 18,730.44 and 8,796.93 is: 12,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.50 : 18,730.44 = 8,796.93 : x
  2. Step 2: Convert to fraction form
    13,585.50/18,730.44 = 8,796.93/x
  3. Step 3: Cross multiply
    13,585.50x = 18,730.44 × 8,796.93
  4. Step 4: Simplify right side
    13,585.50x = 164,770,369.55
  5. Step 5: Solve for x
    x = 164,770,369.55/13,585.50
  6. Step 6: Final answer
    x = 12,128.40

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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.