Home / 21,897.81-30,219.21-12,466.44

Finding the Fourth Proportional to 21,897.81, 30,219.21 and 12,466.44

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Solution

The fourth proportional to 21,897.81, 30,219.21 and 12,466.44 is: 17,203.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,897.81 : 30,219.21 = 12,466.44 : x
  2. Step 2: Convert to fraction form
    21,897.81/30,219.21 = 12,466.44/x
  3. Step 3: Cross multiply
    21,897.81x = 30,219.21 × 12,466.44
  4. Step 4: Simplify right side
    21,897.81x = 376,725,968.31
  5. Step 5: Solve for x
    x = 376,725,968.31/21,897.81
  6. Step 6: Final answer
    x = 17,203.82

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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.