Home / 18,713.78-28,056.62-11,316.72

Finding the Fourth Proportional to 18,713.78, 28,056.62 and 11,316.72

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Solution

The fourth proportional to 18,713.78, 28,056.62 and 11,316.72 is: 16,966.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.78 : 28,056.62 = 11,316.72 : x
  2. Step 2: Convert to fraction form
    18,713.78/28,056.62 = 11,316.72/x
  3. Step 3: Cross multiply
    18,713.78x = 28,056.62 × 11,316.72
  4. Step 4: Simplify right side
    18,713.78x = 317,508,940.98
  5. Step 5: Solve for x
    x = 317,508,940.98/18,713.78
  6. Step 6: Final answer
    x = 16,966.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.