Home / 21,912.03-30,240.73-12,962.41

Finding the Fourth Proportional to 21,912.03, 30,240.73 and 12,962.41

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Solution

The fourth proportional to 21,912.03, 30,240.73 and 12,962.41 is: 17,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.03 : 30,240.73 = 12,962.41 : x
  2. Step 2: Convert to fraction form
    21,912.03/30,240.73 = 12,962.41/x
  3. Step 3: Cross multiply
    21,912.03x = 30,240.73 × 12,962.41
  4. Step 4: Simplify right side
    21,912.03x = 391,992,746.35
  5. Step 5: Solve for x
    x = 391,992,746.35/21,912.03
  6. Step 6: Final answer
    x = 17,889.39

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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.