Home / 20,990.37-31,482.84-6,200.85

Finding the Fourth Proportional to 20,990.37, 31,482.84 and 6,200.85

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Solution

The fourth proportional to 20,990.37, 31,482.84 and 6,200.85 is: 9,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990.37 : 31,482.84 = 6,200.85 : x
  2. Step 2: Convert to fraction form
    20,990.37/31,482.84 = 6,200.85/x
  3. Step 3: Cross multiply
    20,990.37x = 31,482.84 × 6,200.85
  4. Step 4: Simplify right side
    20,990.37x = 195,220,368.41
  5. Step 5: Solve for x
    x = 195,220,368.41/20,990.37
  6. Step 6: Final answer
    x = 9,300.47

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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.