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Finding the Fourth Proportional to 28,747.79, 43,118.03 and 21,363.02

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Solution

The fourth proportional to 28,747.79, 43,118.03 and 21,363.02 is: 32,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.79 : 43,118.03 = 21,363.02 : x
  2. Step 2: Convert to fraction form
    28,747.79/43,118.03 = 21,363.02/x
  3. Step 3: Cross multiply
    28,747.79x = 43,118.03 × 21,363.02
  4. Step 4: Simplify right side
    28,747.79x = 921,131,175.07
  5. Step 5: Solve for x
    x = 921,131,175.07/28,747.79
  6. Step 6: Final answer
    x = 32,041.81

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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.