Home / 30,019.50-45,015.11-17,543.12

Finding the Fourth Proportional to 30,019.50, 45,015.11 and 17,543.12

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Solution

The fourth proportional to 30,019.50, 45,015.11 and 17,543.12 is: 26,306.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,019.50 : 45,015.11 = 17,543.12 : x
  2. Step 2: Convert to fraction form
    30,019.50/45,015.11 = 17,543.12/x
  3. Step 3: Cross multiply
    30,019.50x = 45,015.11 × 17,543.12
  4. Step 4: Simplify right side
    30,019.50x = 789,705,163.75
  5. Step 5: Solve for x
    x = 789,705,163.75/30,019.50
  6. Step 6: Final answer
    x = 26,306.41

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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.