Home / 21,224.08-31,849.44-8,077.60

Finding the Fourth Proportional to 21,224.08, 31,849.44 and 8,077.60

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Solution

The fourth proportional to 21,224.08, 31,849.44 and 8,077.60 is: 12,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.08 : 31,849.44 = 8,077.60 : x
  2. Step 2: Convert to fraction form
    21,224.08/31,849.44 = 8,077.60/x
  3. Step 3: Cross multiply
    21,224.08x = 31,849.44 × 8,077.60
  4. Step 4: Simplify right side
    21,224.08x = 257,267,036.54
  5. Step 5: Solve for x
    x = 257,267,036.54/21,224.08
  6. Step 6: Final answer
    x = 12,121.47

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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.