Home / 21,192.84-31,789.48-6,401.88

Finding the Fourth Proportional to 21,192.84, 31,789.48 and 6,401.88

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Solution

The fourth proportional to 21,192.84, 31,789.48 and 6,401.88 is: 9,602.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.84 : 31,789.48 = 6,401.88 : x
  2. Step 2: Convert to fraction form
    21,192.84/31,789.48 = 6,401.88/x
  3. Step 3: Cross multiply
    21,192.84x = 31,789.48 × 6,401.88
  4. Step 4: Simplify right side
    21,192.84x = 203,512,436.22
  5. Step 5: Solve for x
    x = 203,512,436.22/21,192.84
  6. Step 6: Final answer
    x = 9,602.89

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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.