Home / 20,411.89-30,588.62-11,628.65

Finding the Fourth Proportional to 20,411.89, 30,588.62 and 11,628.65

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Solution

The fourth proportional to 20,411.89, 30,588.62 and 11,628.65 is: 17,426.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.89 : 30,588.62 = 11,628.65 : x
  2. Step 2: Convert to fraction form
    20,411.89/30,588.62 = 11,628.65/x
  3. Step 3: Cross multiply
    20,411.89x = 30,588.62 × 11,628.65
  4. Step 4: Simplify right side
    20,411.89x = 355,704,374.29
  5. Step 5: Solve for x
    x = 355,704,374.29/20,411.89
  6. Step 6: Final answer
    x = 17,426.33

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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.