Home / 21,830.26-30,124.14-12,397

Finding the Fourth Proportional to 21,830.26, 30,124.14 and 12,397

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Solution

The fourth proportional to 21,830.26, 30,124.14 and 12,397 is: 17,106.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830.26 : 30,124.14 = 12,397 : x
  2. Step 2: Convert to fraction form
    21,830.26/30,124.14 = 12,397/x
  3. Step 3: Cross multiply
    21,830.26x = 30,124.14 × 12,397
  4. Step 4: Simplify right side
    21,830.26x = 373,448,963.58
  5. Step 5: Solve for x
    x = 373,448,963.58/21,830.26
  6. Step 6: Final answer
    x = 17,106.94

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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.