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Finding the Fourth Proportional to 30,390.60, 45,589.54 and 9,327.89

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Solution

The fourth proportional to 30,390.60, 45,589.54 and 9,327.89 is: 13,992.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.60 : 45,589.54 = 9,327.89 : x
  2. Step 2: Convert to fraction form
    30,390.60/45,589.54 = 9,327.89/x
  3. Step 3: Cross multiply
    30,390.60x = 45,589.54 × 9,327.89
  4. Step 4: Simplify right side
    30,390.60x = 425,253,986.32
  5. Step 5: Solve for x
    x = 425,253,986.32/30,390.60
  6. Step 6: Final answer
    x = 13,992.94

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1.5x scale

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.