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Finding the Fourth Proportional to 17,128.85, 25,692.91 and 7,894.85

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Solution

The fourth proportional to 17,128.85, 25,692.91 and 7,894.85 is: 11,842.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,128.85 : 25,692.91 = 7,894.85 : x
  2. Step 2: Convert to fraction form
    17,128.85/25,692.91 = 7,894.85/x
  3. Step 3: Cross multiply
    17,128.85x = 25,692.91 × 7,894.85
  4. Step 4: Simplify right side
    17,128.85x = 202,841,670.51
  5. Step 5: Solve for x
    x = 202,841,670.51/17,128.85
  6. Step 6: Final answer
    x = 11,842.11

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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.