Home / 21,255.48-31,881.55-6,464.37

Finding the Fourth Proportional to 21,255.48, 31,881.55 and 6,464.37

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Solution

The fourth proportional to 21,255.48, 31,881.55 and 6,464.37 is: 9,696.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.48 : 31,881.55 = 6,464.37 : x
  2. Step 2: Convert to fraction form
    21,255.48/31,881.55 = 6,464.37/x
  3. Step 3: Cross multiply
    21,255.48x = 31,881.55 × 6,464.37
  4. Step 4: Simplify right side
    21,255.48x = 206,094,250.89
  5. Step 5: Solve for x
    x = 206,094,250.89/21,255.48
  6. Step 6: Final answer
    x = 9,696.05

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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.