Home / 21,282.06-31,889.98-8,127.26

Finding the Fourth Proportional to 21,282.06, 31,889.98 and 8,127.26

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Solution

The fourth proportional to 21,282.06, 31,889.98 and 8,127.26 is: 12,178.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.06 : 31,889.98 = 8,127.26 : x
  2. Step 2: Convert to fraction form
    21,282.06/31,889.98 = 8,127.26/x
  3. Step 3: Cross multiply
    21,282.06x = 31,889.98 × 8,127.26
  4. Step 4: Simplify right side
    21,282.06x = 259,177,958.77
  5. Step 5: Solve for x
    x = 259,177,958.77/21,282.06
  6. Step 6: Final answer
    x = 12,178.24

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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.