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Finding the Fourth Proportional to 19,824.59, 27,360.11 and 12,661.10

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Solution

The fourth proportional to 19,824.59, 27,360.11 and 12,661.10 is: 17,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,824.59 : 27,360.11 = 12,661.10 : x
  2. Step 2: Convert to fraction form
    19,824.59/27,360.11 = 12,661.10/x
  3. Step 3: Cross multiply
    19,824.59x = 27,360.11 × 12,661.10
  4. Step 4: Simplify right side
    19,824.59x = 346,409,093.82
  5. Step 5: Solve for x
    x = 346,409,093.82/19,824.59
  6. Step 6: Final answer
    x = 17,473.71

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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.