Home / 20,717.94-28,590.21-11,285.94

Finding the Fourth Proportional to 20,717.94, 28,590.21 and 11,285.94

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Solution

The fourth proportional to 20,717.94, 28,590.21 and 11,285.94 is: 15,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.94 : 28,590.21 = 11,285.94 : x
  2. Step 2: Convert to fraction form
    20,717.94/28,590.21 = 11,285.94/x
  3. Step 3: Cross multiply
    20,717.94x = 28,590.21 × 11,285.94
  4. Step 4: Simplify right side
    20,717.94x = 322,667,394.65
  5. Step 5: Solve for x
    x = 322,667,394.65/20,717.94
  6. Step 6: Final answer
    x = 15,574.30

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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.