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Finding the Fourth Proportional to 27,692.93, 38,211.12 and 15,755.55

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Solution

The fourth proportional to 27,692.93, 38,211.12 and 15,755.55 is: 21,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,692.93 : 38,211.12 = 15,755.55 : x
  2. Step 2: Convert to fraction form
    27,692.93/38,211.12 = 15,755.55/x
  3. Step 3: Cross multiply
    27,692.93x = 38,211.12 × 15,755.55
  4. Step 4: Simplify right side
    27,692.93x = 602,037,211.72
  5. Step 5: Solve for x
    x = 602,037,211.72/27,692.93
  6. Step 6: Final answer
    x = 21,739.75

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Half scale
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Double scale
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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.