Home / 20,211.30-30,316.95-19,433.70

Finding the Fourth Proportional to 20,211.30, 30,316.95 and 19,433.70

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Solution

The fourth proportional to 20,211.30, 30,316.95 and 19,433.70 is: 29,150.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.30 : 30,316.95 = 19,433.70 : x
  2. Step 2: Convert to fraction form
    20,211.30/30,316.95 = 19,433.70/x
  3. Step 3: Cross multiply
    20,211.30x = 30,316.95 × 19,433.70
  4. Step 4: Simplify right side
    20,211.30x = 589,170,511.22
  5. Step 5: Solve for x
    x = 589,170,511.22/20,211.30
  6. Step 6: Final answer
    x = 29,150.55

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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.