Home / 21,531.02-29,704.36-15,879.33

Finding the Fourth Proportional to 21,531.02, 29,704.36 and 15,879.33

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Solution

The fourth proportional to 21,531.02, 29,704.36 and 15,879.33 is: 21,907.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.02 : 29,704.36 = 15,879.33 : x
  2. Step 2: Convert to fraction form
    21,531.02/29,704.36 = 15,879.33/x
  3. Step 3: Cross multiply
    21,531.02x = 29,704.36 × 15,879.33
  4. Step 4: Simplify right side
    21,531.02x = 471,685,260.85
  5. Step 5: Solve for x
    x = 471,685,260.85/21,531.02
  6. Step 6: Final answer
    x = 21,907.25

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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.