Home / 19,665.61-27,140.93-11,170.39

Finding the Fourth Proportional to 19,665.61, 27,140.93 and 11,170.39

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Solution

The fourth proportional to 19,665.61, 27,140.93 and 11,170.39 is: 15,416.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.61 : 27,140.93 = 11,170.39 : x
  2. Step 2: Convert to fraction form
    19,665.61/27,140.93 = 11,170.39/x
  3. Step 3: Cross multiply
    19,665.61x = 27,140.93 × 11,170.39
  4. Step 4: Simplify right side
    19,665.61x = 303,174,773.06
  5. Step 5: Solve for x
    x = 303,174,773.06/19,665.61
  6. Step 6: Final answer
    x = 15,416.49

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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.