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Finding the Fourth Proportional to 28,853, 39,817.14 and 20,484.08

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Solution

The fourth proportional to 28,853, 39,817.14 and 20,484.08 is: 28,268.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,853 : 39,817.14 = 20,484.08 : x
  2. Step 2: Convert to fraction form
    28,853/39,817.14 = 20,484.08/x
  3. Step 3: Cross multiply
    28,853x = 39,817.14 × 20,484.08
  4. Step 4: Simplify right side
    28,853x = 815,617,481.13
  5. Step 5: Solve for x
    x = 815,617,481.13/28,853
  6. Step 6: Final answer
    x = 28,268.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.