Home / 21,333.08-31,999.80-8,182.32

Finding the Fourth Proportional to 21,333.08, 31,999.80 and 8,182.32

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Solution

The fourth proportional to 21,333.08, 31,999.80 and 8,182.32 is: 12,273.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.08 : 31,999.80 = 8,182.32 : x
  2. Step 2: Convert to fraction form
    21,333.08/31,999.80 = 8,182.32/x
  3. Step 3: Cross multiply
    21,333.08x = 31,999.80 × 8,182.32
  4. Step 4: Simplify right side
    21,333.08x = 261,832,603.54
  5. Step 5: Solve for x
    x = 261,832,603.54/21,333.08
  6. Step 6: Final answer
    x = 12,273.55

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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.