Home / 21,879.83-30,203.31-14,810.36

Finding the Fourth Proportional to 21,879.83, 30,203.31 and 14,810.36

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Solution

The fourth proportional to 21,879.83, 30,203.31 and 14,810.36 is: 20,444.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.83 : 30,203.31 = 14,810.36 : x
  2. Step 2: Convert to fraction form
    21,879.83/30,203.31 = 14,810.36/x
  3. Step 3: Cross multiply
    21,879.83x = 30,203.31 × 14,810.36
  4. Step 4: Simplify right side
    21,879.83x = 447,321,743.28
  5. Step 5: Solve for x
    x = 447,321,743.28/21,879.83
  6. Step 6: Final answer
    x = 20,444.48

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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.