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Finding the Fourth Proportional to 19,719.52, 27,212.16 and 10,767.40

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Solution

The fourth proportional to 19,719.52, 27,212.16 and 10,767.40 is: 14,858.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.52 : 27,212.16 = 10,767.40 : x
  2. Step 2: Convert to fraction form
    19,719.52/27,212.16 = 10,767.40/x
  3. Step 3: Cross multiply
    19,719.52x = 27,212.16 × 10,767.40
  4. Step 4: Simplify right side
    19,719.52x = 293,004,211.58
  5. Step 5: Solve for x
    x = 293,004,211.58/19,719.52
  6. Step 6: Final answer
    x = 14,858.59

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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.