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Finding the Fourth Proportional to 28,809.65, 43,204.73 and 14,009.15

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Solution

The fourth proportional to 28,809.65, 43,204.73 and 14,009.15 is: 21,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.65 : 43,204.73 = 14,009.15 : x
  2. Step 2: Convert to fraction form
    28,809.65/43,204.73 = 14,009.15/x
  3. Step 3: Cross multiply
    28,809.65x = 43,204.73 × 14,009.15
  4. Step 4: Simplify right side
    28,809.65x = 605,261,257.21
  5. Step 5: Solve for x
    x = 605,261,257.21/28,809.65
  6. Step 6: Final answer
    x = 21,008.98

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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.