Home / 20,865.70-31,303.69-6,074.75

Finding the Fourth Proportional to 20,865.70, 31,303.69 and 6,074.75

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Solution

The fourth proportional to 20,865.70, 31,303.69 and 6,074.75 is: 9,113.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.70 : 31,303.69 = 6,074.75 : x
  2. Step 2: Convert to fraction form
    20,865.70/31,303.69 = 6,074.75/x
  3. Step 3: Cross multiply
    20,865.70x = 31,303.69 × 6,074.75
  4. Step 4: Simplify right side
    20,865.70x = 190,162,090.83
  5. Step 5: Solve for x
    x = 190,162,090.83/20,865.70
  6. Step 6: Final answer
    x = 9,113.62

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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.