Home / 19,561.70-29,329.73-11,128.39

Finding the Fourth Proportional to 19,561.70, 29,329.73 and 11,128.39

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Solution

The fourth proportional to 19,561.70, 29,329.73 and 11,128.39 is: 16,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,561.70 : 29,329.73 = 11,128.39 : x
  2. Step 2: Convert to fraction form
    19,561.70/29,329.73 = 11,128.39/x
  3. Step 3: Cross multiply
    19,561.70x = 29,329.73 × 11,128.39
  4. Step 4: Simplify right side
    19,561.70x = 326,392,471.74
  5. Step 5: Solve for x
    x = 326,392,471.74/19,561.70
  6. Step 6: Final answer
    x = 16,685.28

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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.