Home / 21,912.22-30,240.98-12,962.60

Finding the Fourth Proportional to 21,912.22, 30,240.98 and 12,962.60

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Solution

The fourth proportional to 21,912.22, 30,240.98 and 12,962.60 is: 17,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.22 : 30,240.98 = 12,962.60 : x
  2. Step 2: Convert to fraction form
    21,912.22/30,240.98 = 12,962.60/x
  3. Step 3: Cross multiply
    21,912.22x = 30,240.98 × 12,962.60
  4. Step 4: Simplify right side
    21,912.22x = 392,001,746.26
  5. Step 5: Solve for x
    x = 392,001,746.26/21,912.22
  6. Step 6: Final answer
    x = 17,889.64

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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.