Home / 19,390.65-28,954.62-15,397.09

Finding the Fourth Proportional to 19,390.65, 28,954.62 and 15,397.09

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Solution

The fourth proportional to 19,390.65, 28,954.62 and 15,397.09 is: 22,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.65 : 28,954.62 = 15,397.09 : x
  2. Step 2: Convert to fraction form
    19,390.65/28,954.62 = 15,397.09/x
  3. Step 3: Cross multiply
    19,390.65x = 28,954.62 × 15,397.09
  4. Step 4: Simplify right side
    19,390.65x = 445,816,890.06
  5. Step 5: Solve for x
    x = 445,816,890.06/19,390.65
  6. Step 6: Final answer
    x = 22,991.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.