Home / 21,939.84-30,271.68-12,504.96

Finding the Fourth Proportional to 21,939.84, 30,271.68 and 12,504.96

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Solution

The fourth proportional to 21,939.84, 30,271.68 and 12,504.96 is: 17,253.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.84 : 30,271.68 = 12,504.96 : x
  2. Step 2: Convert to fraction form
    21,939.84/30,271.68 = 12,504.96/x
  3. Step 3: Cross multiply
    21,939.84x = 30,271.68 × 12,504.96
  4. Step 4: Simplify right side
    21,939.84x = 378,546,147.53
  5. Step 5: Solve for x
    x = 378,546,147.53/21,939.84
  6. Step 6: Final answer
    x = 17,253.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.