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Finding the Fourth Proportional to 19,719.08, 27,212.34 and 11,335.08

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Solution

The fourth proportional to 19,719.08, 27,212.34 and 11,335.08 is: 15,642.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.08 : 27,212.34 = 11,335.08 : x
  2. Step 2: Convert to fraction form
    19,719.08/27,212.34 = 11,335.08/x
  3. Step 3: Cross multiply
    19,719.08x = 27,212.34 × 11,335.08
  4. Step 4: Simplify right side
    19,719.08x = 308,454,050.89
  5. Step 5: Solve for x
    x = 308,454,050.89/19,719.08
  6. Step 6: Final answer
    x = 15,642.42

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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.