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Finding the Fourth Proportional to 12,755.70, 19,133.55 and 11,346.30

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Solution

The fourth proportional to 12,755.70, 19,133.55 and 11,346.30 is: 17,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.70 : 19,133.55 = 11,346.30 : x
  2. Step 2: Convert to fraction form
    12,755.70/19,133.55 = 11,346.30/x
  3. Step 3: Cross multiply
    12,755.70x = 19,133.55 × 11,346.30
  4. Step 4: Simplify right side
    12,755.70x = 217,094,998.37
  5. Step 5: Solve for x
    x = 217,094,998.37/12,755.70
  6. Step 6: Final answer
    x = 17,019.45

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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.