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Finding the Fourth Proportional to 12,731.80, 19,097.70 and 11,346.70

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Solution

The fourth proportional to 12,731.80, 19,097.70 and 11,346.70 is: 17,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.80 : 19,097.70 = 11,346.70 : x
  2. Step 2: Convert to fraction form
    12,731.80/19,097.70 = 11,346.70/x
  3. Step 3: Cross multiply
    12,731.80x = 19,097.70 × 11,346.70
  4. Step 4: Simplify right side
    12,731.80x = 216,695,872.59
  5. Step 5: Solve for x
    x = 216,695,872.59/12,731.80
  6. Step 6: Final answer
    x = 17,020.05

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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.