Home / 19,818.54-27,346.10-11,316.78

Finding the Fourth Proportional to 19,818.54, 27,346.10 and 11,316.78

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Solution

The fourth proportional to 19,818.54, 27,346.10 and 11,316.78 is: 15,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.54 : 27,346.10 = 11,316.78 : x
  2. Step 2: Convert to fraction form
    19,818.54/27,346.10 = 11,316.78/x
  3. Step 3: Cross multiply
    19,818.54x = 27,346.10 × 11,316.78
  4. Step 4: Simplify right side
    19,818.54x = 309,469,797.56
  5. Step 5: Solve for x
    x = 309,469,797.56/19,818.54
  6. Step 6: Final answer
    x = 15,615.17

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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.