Home / 21,912.44-30,253.75-12,962.81

Finding the Fourth Proportional to 21,912.44, 30,253.75 and 12,962.81

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Solution

The fourth proportional to 21,912.44, 30,253.75 and 12,962.81 is: 17,897.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.44 : 30,253.75 = 12,962.81 : x
  2. Step 2: Convert to fraction form
    21,912.44/30,253.75 = 12,962.81/x
  3. Step 3: Cross multiply
    21,912.44x = 30,253.75 × 12,962.81
  4. Step 4: Simplify right side
    21,912.44x = 392,173,429.36
  5. Step 5: Solve for x
    x = 392,173,429.36/21,912.44
  6. Step 6: Final answer
    x = 17,897.30

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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.