Home / 20,809.23-31,213.02-11,467.77

Finding the Fourth Proportional to 20,809.23, 31,213.02 and 11,467.77

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Solution

The fourth proportional to 20,809.23, 31,213.02 and 11,467.77 is: 17,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.23 : 31,213.02 = 11,467.77 : x
  2. Step 2: Convert to fraction form
    20,809.23/31,213.02 = 11,467.77/x
  3. Step 3: Cross multiply
    20,809.23x = 31,213.02 × 11,467.77
  4. Step 4: Simplify right side
    20,809.23x = 357,943,734.37
  5. Step 5: Solve for x
    x = 357,943,734.37/20,809.23
  6. Step 6: Final answer
    x = 17,201.20

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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.