Home / 18,818.97-28,222.69-13,012.89

Finding the Fourth Proportional to 18,818.97, 28,222.69 and 13,012.89

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Solution

The fourth proportional to 18,818.97, 28,222.69 and 13,012.89 is: 19,515.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.97 : 28,222.69 = 13,012.89 : x
  2. Step 2: Convert to fraction form
    18,818.97/28,222.69 = 13,012.89/x
  3. Step 3: Cross multiply
    18,818.97x = 28,222.69 × 13,012.89
  4. Step 4: Simplify right side
    18,818.97x = 367,258,760.47
  5. Step 5: Solve for x
    x = 367,258,760.47/18,818.97
  6. Step 6: Final answer
    x = 19,515.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.