Home / 30,219.75-45,329.63-11,751.75

Finding the Fourth Proportional to 30,219.75, 45,329.63 and 11,751.75

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Solution

The fourth proportional to 30,219.75, 45,329.63 and 11,751.75 is: 17,627.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.75 : 45,329.63 = 11,751.75 : x
  2. Step 2: Convert to fraction form
    30,219.75/45,329.63 = 11,751.75/x
  3. Step 3: Cross multiply
    30,219.75x = 45,329.63 × 11,751.75
  4. Step 4: Simplify right side
    30,219.75x = 532,702,420.59
  5. Step 5: Solve for x
    x = 532,702,420.59/30,219.75
  6. Step 6: Final answer
    x = 17,627.63

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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.