Home / 39,811.20-59,619.60-19,010.40

Finding the Fourth Proportional to 39,811.20, 59,619.60 and 19,010.40

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Solution

The fourth proportional to 39,811.20, 59,619.60 and 19,010.40 is: 28,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,811.20 : 59,619.60 = 19,010.40 : x
  2. Step 2: Convert to fraction form
    39,811.20/59,619.60 = 19,010.40/x
  3. Step 3: Cross multiply
    39,811.20x = 59,619.60 × 19,010.40
  4. Step 4: Simplify right side
    39,811.20x = 1,133,392,443.84
  5. Step 5: Solve for x
    x = 1,133,392,443.84/39,811.20
  6. Step 6: Final answer
    x = 28,469.19

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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.