Home / 20,650.89-28,497.99-11,219.37

Finding the Fourth Proportional to 20,650.89, 28,497.99 and 11,219.37

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Solution

The fourth proportional to 20,650.89, 28,497.99 and 11,219.37 is: 15,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.89 : 28,497.99 = 11,219.37 : x
  2. Step 2: Convert to fraction form
    20,650.89/28,497.99 = 11,219.37/x
  3. Step 3: Cross multiply
    20,650.89x = 28,497.99 × 11,219.37
  4. Step 4: Simplify right side
    20,650.89x = 319,729,494.07
  5. Step 5: Solve for x
    x = 319,729,494.07/20,650.89
  6. Step 6: Final answer
    x = 15,482.60

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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.