Home / 13,516.62-18,661.50-8,738.86

Finding the Fourth Proportional to 13,516.62, 18,661.50 and 8,738.86

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Solution

The fourth proportional to 13,516.62, 18,661.50 and 8,738.86 is: 12,065.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.62 : 18,661.50 = 8,738.86 : x
  2. Step 2: Convert to fraction form
    13,516.62/18,661.50 = 8,738.86/x
  3. Step 3: Cross multiply
    13,516.62x = 18,661.50 × 8,738.86
  4. Step 4: Simplify right side
    13,516.62x = 163,080,235.89
  5. Step 5: Solve for x
    x = 163,080,235.89/13,516.62
  6. Step 6: Final answer
    x = 12,065.16

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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.