Home / 13,516.59-18,661.64-12,097.80

Finding the Fourth Proportional to 13,516.59, 18,661.64 and 12,097.80

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Solution

The fourth proportional to 13,516.59, 18,661.64 and 12,097.80 is: 16,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.59 : 18,661.64 = 12,097.80 : x
  2. Step 2: Convert to fraction form
    13,516.59/18,661.64 = 12,097.80/x
  3. Step 3: Cross multiply
    13,516.59x = 18,661.64 × 12,097.80
  4. Step 4: Simplify right side
    13,516.59x = 225,764,727.90
  5. Step 5: Solve for x
    x = 225,764,727.90/13,516.59
  6. Step 6: Final answer
    x = 16,702.79

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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.