Home / 28,291.38-39,042.71-15,544.72

Finding the Fourth Proportional to 28,291.38, 39,042.71 and 15,544.72

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Solution

The fourth proportional to 28,291.38, 39,042.71 and 15,544.72 is: 21,452.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.38 : 39,042.71 = 15,544.72 : x
  2. Step 2: Convert to fraction form
    28,291.38/39,042.71 = 15,544.72/x
  3. Step 3: Cross multiply
    28,291.38x = 39,042.71 × 15,544.72
  4. Step 4: Simplify right side
    28,291.38x = 606,907,994.99
  5. Step 5: Solve for x
    x = 606,907,994.99/28,291.38
  6. Step 6: Final answer
    x = 21,452.05

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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.