Home / 28,255.72-39,000.06-19,306.84

Finding the Fourth Proportional to 28,255.72, 39,000.06 and 19,306.84

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Solution

The fourth proportional to 28,255.72, 39,000.06 and 19,306.84 is: 26,648.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,255.72 : 39,000.06 = 19,306.84 : x
  2. Step 2: Convert to fraction form
    28,255.72/39,000.06 = 19,306.84/x
  3. Step 3: Cross multiply
    28,255.72x = 39,000.06 × 19,306.84
  4. Step 4: Simplify right side
    28,255.72x = 752,967,918.41
  5. Step 5: Solve for x
    x = 752,967,918.41/28,255.72
  6. Step 6: Final answer
    x = 26,648.34

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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.