Home / 19,782.39-29,630.93-18,619.23

Finding the Fourth Proportional to 19,782.39, 29,630.93 and 18,619.23

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Solution

The fourth proportional to 19,782.39, 29,630.93 and 18,619.23 is: 27,888.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782.39 : 29,630.93 = 18,619.23 : x
  2. Step 2: Convert to fraction form
    19,782.39/29,630.93 = 18,619.23/x
  3. Step 3: Cross multiply
    19,782.39x = 29,630.93 × 18,619.23
  4. Step 4: Simplify right side
    19,782.39x = 551,705,007.69
  5. Step 5: Solve for x
    x = 551,705,007.69/19,782.39
  6. Step 6: Final answer
    x = 27,888.69

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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.