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Finding the Fourth Proportional to 28,692.81, 43,035.78 and 7,634.40

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Solution

The fourth proportional to 28,692.81, 43,035.78 and 7,634.40 is: 11,450.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.81 : 43,035.78 = 7,634.40 : x
  2. Step 2: Convert to fraction form
    28,692.81/43,035.78 = 7,634.40/x
  3. Step 3: Cross multiply
    28,692.81x = 43,035.78 × 7,634.40
  4. Step 4: Simplify right side
    28,692.81x = 328,552,358.83
  5. Step 5: Solve for x
    x = 328,552,358.83/28,692.81
  6. Step 6: Final answer
    x = 11,450.69

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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.