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Finding the Fourth Proportional to 30,486.99, 45,734.73 and 9,428.73

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Solution

The fourth proportional to 30,486.99, 45,734.73 and 9,428.73 is: 14,144.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.99 : 45,734.73 = 9,428.73 : x
  2. Step 2: Convert to fraction form
    30,486.99/45,734.73 = 9,428.73/x
  3. Step 3: Cross multiply
    30,486.99x = 45,734.73 × 9,428.73
  4. Step 4: Simplify right side
    30,486.99x = 431,220,420.79
  5. Step 5: Solve for x
    x = 431,220,420.79/30,486.99
  6. Step 6: Final answer
    x = 14,144.41

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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.