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Finding the Fourth Proportional to 28,692.32, 43,030.11 and 11,157.98

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Solution

The fourth proportional to 28,692.32, 43,030.11 and 11,157.98 is: 16,733.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.32 : 43,030.11 = 11,157.98 : x
  2. Step 2: Convert to fraction form
    28,692.32/43,030.11 = 11,157.98/x
  3. Step 3: Cross multiply
    28,692.32x = 43,030.11 × 11,157.98
  4. Step 4: Simplify right side
    28,692.32x = 480,129,106.78
  5. Step 5: Solve for x
    x = 480,129,106.78/28,692.32
  6. Step 6: Final answer
    x = 16,733.72

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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.