Home / 19,642.40-27,090.94-13,889.68

Finding the Fourth Proportional to 19,642.40, 27,090.94 and 13,889.68

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Solution

The fourth proportional to 19,642.40, 27,090.94 and 13,889.68 is: 19,156.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,642.40 : 27,090.94 = 13,889.68 : x
  2. Step 2: Convert to fraction form
    19,642.40/27,090.94 = 13,889.68/x
  3. Step 3: Cross multiply
    19,642.40x = 27,090.94 × 13,889.68
  4. Step 4: Simplify right side
    19,642.40x = 376,284,487.50
  5. Step 5: Solve for x
    x = 376,284,487.50/19,642.40
  6. Step 6: Final answer
    x = 19,156.75

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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.