Home / 19,093.60-28,640.40-13,188.70

Finding the Fourth Proportional to 19,093.60, 28,640.40 and 13,188.70

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Solution

The fourth proportional to 19,093.60, 28,640.40 and 13,188.70 is: 19,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,093.60 : 28,640.40 = 13,188.70 : x
  2. Step 2: Convert to fraction form
    19,093.60/28,640.40 = 13,188.70/x
  3. Step 3: Cross multiply
    19,093.60x = 28,640.40 × 13,188.70
  4. Step 4: Simplify right side
    19,093.60x = 377,729,643.48
  5. Step 5: Solve for x
    x = 377,729,643.48/19,093.60
  6. Step 6: Final answer
    x = 19,783.05

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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.