Home / 20,211.80-30,312.30-7,062.80

Finding the Fourth Proportional to 20,211.80, 30,312.30 and 7,062.80

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Solution

The fourth proportional to 20,211.80, 30,312.30 and 7,062.80 is: 10,592.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.80 : 30,312.30 = 7,062.80 : x
  2. Step 2: Convert to fraction form
    20,211.80/30,312.30 = 7,062.80/x
  3. Step 3: Cross multiply
    20,211.80x = 30,312.30 × 7,062.80
  4. Step 4: Simplify right side
    20,211.80x = 214,089,712.44
  5. Step 5: Solve for x
    x = 214,089,712.44/20,211.80
  6. Step 6: Final answer
    x = 10,592.31

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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.