Home / 21,818.66-30,107.96-12,258.02

Finding the Fourth Proportional to 21,818.66, 30,107.96 and 12,258.02

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Solution

The fourth proportional to 21,818.66, 30,107.96 and 12,258.02 is: 16,915.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.66 : 30,107.96 = 12,258.02 : x
  2. Step 2: Convert to fraction form
    21,818.66/30,107.96 = 12,258.02/x
  3. Step 3: Cross multiply
    21,818.66x = 30,107.96 × 12,258.02
  4. Step 4: Simplify right side
    21,818.66x = 369,063,975.84
  5. Step 5: Solve for x
    x = 369,063,975.84/21,818.66
  6. Step 6: Final answer
    x = 16,915.06

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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.