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Finding the Fourth Proportional to 28,666, 43,009.94 and 11,137.20

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Solution

The fourth proportional to 28,666, 43,009.94 and 11,137.20 is: 16,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666 : 43,009.94 = 11,137.20 : x
  2. Step 2: Convert to fraction form
    28,666/43,009.94 = 11,137.20/x
  3. Step 3: Cross multiply
    28,666x = 43,009.94 × 11,137.20
  4. Step 4: Simplify right side
    28,666x = 479,010,303.77
  5. Step 5: Solve for x
    x = 479,010,303.77/28,666
  6. Step 6: Final answer
    x = 16,710.05

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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.