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Finding the Fourth Proportional to 19,661.08, 27,132.78 and 10,709.08

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Solution

The fourth proportional to 19,661.08, 27,132.78 and 10,709.08 is: 14,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.08 : 27,132.78 = 10,709.08 : x
  2. Step 2: Convert to fraction form
    19,661.08/27,132.78 = 10,709.08/x
  3. Step 3: Cross multiply
    19,661.08x = 27,132.78 × 10,709.08
  4. Step 4: Simplify right side
    19,661.08x = 290,567,111.64
  5. Step 5: Solve for x
    x = 290,567,111.64/19,661.08
  6. Step 6: Final answer
    x = 14,778.80

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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.