Home / 20,658.93-28,511.64-19,392.09

Finding the Fourth Proportional to 20,658.93, 28,511.64 and 19,392.09

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Solution

The fourth proportional to 20,658.93, 28,511.64 and 19,392.09 is: 26,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.93 : 28,511.64 = 19,392.09 : x
  2. Step 2: Convert to fraction form
    20,658.93/28,511.64 = 19,392.09/x
  3. Step 3: Cross multiply
    20,658.93x = 28,511.64 × 19,392.09
  4. Step 4: Simplify right side
    20,658.93x = 552,900,288.93
  5. Step 5: Solve for x
    x = 552,900,288.93/20,658.93
  6. Step 6: Final answer
    x = 26,763.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.