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Finding the Fourth Proportional to 30,425.74, 45,654.66 and 21,598.08

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Solution

The fourth proportional to 30,425.74, 45,654.66 and 21,598.08 is: 32,408.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,425.74 : 45,654.66 = 21,598.08 : x
  2. Step 2: Convert to fraction form
    30,425.74/45,654.66 = 21,598.08/x
  3. Step 3: Cross multiply
    30,425.74x = 45,654.66 × 21,598.08
  4. Step 4: Simplify right side
    30,425.74x = 986,052,999.05
  5. Step 5: Solve for x
    x = 986,052,999.05/30,425.74
  6. Step 6: Final answer
    x = 32,408.51

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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.