Home / 19,913.20-29,812.20-17,839.60

Finding the Fourth Proportional to 19,913.20, 29,812.20 and 17,839.60

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Solution

The fourth proportional to 19,913.20, 29,812.20 and 17,839.60 is: 26,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.20 : 29,812.20 = 17,839.60 : x
  2. Step 2: Convert to fraction form
    19,913.20/29,812.20 = 17,839.60/x
  3. Step 3: Cross multiply
    19,913.20x = 29,812.20 × 17,839.60
  4. Step 4: Simplify right side
    19,913.20x = 531,837,723.12
  5. Step 5: Solve for x
    x = 531,837,723.12/19,913.20
  6. Step 6: Final answer
    x = 26,707.80

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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.