Home / 18,820.40-28,235.33-13,284.54

Finding the Fourth Proportional to 18,820.40, 28,235.33 and 13,284.54

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Solution

The fourth proportional to 18,820.40, 28,235.33 and 13,284.54 is: 19,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.40 : 28,235.33 = 13,284.54 : x
  2. Step 2: Convert to fraction form
    18,820.40/28,235.33 = 13,284.54/x
  3. Step 3: Cross multiply
    18,820.40x = 28,235.33 × 13,284.54
  4. Step 4: Simplify right side
    18,820.40x = 375,093,304.38
  5. Step 5: Solve for x
    x = 375,093,304.38/18,820.40
  6. Step 6: Final answer
    x = 19,930.15

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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.