Home / 30,387.12-41,937.12-18,450.96

Finding the Fourth Proportional to 30,387.12, 41,937.12 and 18,450.96

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Solution

The fourth proportional to 30,387.12, 41,937.12 and 18,450.96 is: 25,464.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.12 : 41,937.12 = 18,450.96 : x
  2. Step 2: Convert to fraction form
    30,387.12/41,937.12 = 18,450.96/x
  3. Step 3: Cross multiply
    30,387.12x = 41,937.12 × 18,450.96
  4. Step 4: Simplify right side
    30,387.12x = 773,780,123.64
  5. Step 5: Solve for x
    x = 773,780,123.64/30,387.12
  6. Step 6: Final answer
    x = 25,464.08

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1.5x scale

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.