Home / 19,657.05-27,128.97-11,699.30

Finding the Fourth Proportional to 19,657.05, 27,128.97 and 11,699.30

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Solution

The fourth proportional to 19,657.05, 27,128.97 and 11,699.30 is: 16,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.05 : 27,128.97 = 11,699.30 : x
  2. Step 2: Convert to fraction form
    19,657.05/27,128.97 = 11,699.30/x
  3. Step 3: Cross multiply
    19,657.05x = 27,128.97 × 11,699.30
  4. Step 4: Simplify right side
    19,657.05x = 317,389,823.08
  5. Step 5: Solve for x
    x = 317,389,823.08/19,657.05
  6. Step 6: Final answer
    x = 16,146.36

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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.