Home / 21,142.50-31,712.54-6,351.09

Finding the Fourth Proportional to 21,142.50, 31,712.54 and 6,351.09

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Solution

The fourth proportional to 21,142.50, 31,712.54 and 6,351.09 is: 9,526.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.50 : 31,712.54 = 6,351.09 : x
  2. Step 2: Convert to fraction form
    21,142.50/31,712.54 = 6,351.09/x
  3. Step 3: Cross multiply
    21,142.50x = 31,712.54 × 6,351.09
  4. Step 4: Simplify right side
    21,142.50x = 201,409,163.91
  5. Step 5: Solve for x
    x = 201,409,163.91/21,142.50
  6. Step 6: Final answer
    x = 9,526.27

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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.