Home / 20,389.48-30,592.86-11,144.68

Finding the Fourth Proportional to 20,389.48, 30,592.86 and 11,144.68

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Solution

The fourth proportional to 20,389.48, 30,592.86 and 11,144.68 is: 16,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.48 : 30,592.86 = 11,144.68 : x
  2. Step 2: Convert to fraction form
    20,389.48/30,592.86 = 11,144.68/x
  3. Step 3: Cross multiply
    20,389.48x = 30,592.86 × 11,144.68
  4. Step 4: Simplify right side
    20,389.48x = 340,947,634.98
  5. Step 5: Solve for x
    x = 340,947,634.98/20,389.48
  6. Step 6: Final answer
    x = 16,721.74

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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.