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Finding the Fourth Proportional to 19,662.78, 27,134.40 and 10,710.25

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Solution

The fourth proportional to 19,662.78, 27,134.40 and 10,710.25 is: 14,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.78 : 27,134.40 = 10,710.25 : x
  2. Step 2: Convert to fraction form
    19,662.78/27,134.40 = 10,710.25/x
  3. Step 3: Cross multiply
    19,662.78x = 27,134.40 × 10,710.25
  4. Step 4: Simplify right side
    19,662.78x = 290,616,207.60
  5. Step 5: Solve for x
    x = 290,616,207.60/19,662.78
  6. Step 6: Final answer
    x = 14,780.02

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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.