Home / 20,349.85-30,571.68-19,509.11

Finding the Fourth Proportional to 20,349.85, 30,571.68 and 19,509.11

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Solution

The fourth proportional to 20,349.85, 30,571.68 and 19,509.11 is: 29,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.85 : 30,571.68 = 19,509.11 : x
  2. Step 2: Convert to fraction form
    20,349.85/30,571.68 = 19,509.11/x
  3. Step 3: Cross multiply
    20,349.85x = 30,571.68 × 19,509.11
  4. Step 4: Simplify right side
    20,349.85x = 596,426,268.00
  5. Step 5: Solve for x
    x = 596,426,268.00/20,349.85
  6. Step 6: Final answer
    x = 29,308.63

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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.