Home / 19,938.40-29,879.38-11,057.63

Finding the Fourth Proportional to 19,938.40, 29,879.38 and 11,057.63

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Solution

The fourth proportional to 19,938.40, 29,879.38 and 11,057.63 is: 16,570.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.40 : 29,879.38 = 11,057.63 : x
  2. Step 2: Convert to fraction form
    19,938.40/29,879.38 = 11,057.63/x
  3. Step 3: Cross multiply
    19,938.40x = 29,879.38 × 11,057.63
  4. Step 4: Simplify right side
    19,938.40x = 330,395,161.17
  5. Step 5: Solve for x
    x = 330,395,161.17/19,938.40
  6. Step 6: Final answer
    x = 16,570.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.