Home / 28,512.54-39,347.37-15,766.65

Finding the Fourth Proportional to 28,512.54, 39,347.37 and 15,766.65

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Solution

The fourth proportional to 28,512.54, 39,347.37 and 15,766.65 is: 21,758.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.54 : 39,347.37 = 15,766.65 : x
  2. Step 2: Convert to fraction form
    28,512.54/39,347.37 = 15,766.65/x
  3. Step 3: Cross multiply
    28,512.54x = 39,347.37 × 15,766.65
  4. Step 4: Simplify right side
    28,512.54x = 620,376,211.21
  5. Step 5: Solve for x
    x = 620,376,211.21/28,512.54
  6. Step 6: Final answer
    x = 21,758.01

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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.