Home / 20,368.46-30,555.62-7,722.87

Finding the Fourth Proportional to 20,368.46, 30,555.62 and 7,722.87

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Solution

The fourth proportional to 20,368.46, 30,555.62 and 7,722.87 is: 11,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.46 : 30,555.62 = 7,722.87 : x
  2. Step 2: Convert to fraction form
    20,368.46/30,555.62 = 7,722.87/x
  3. Step 3: Cross multiply
    20,368.46x = 30,555.62 × 7,722.87
  4. Step 4: Simplify right side
    20,368.46x = 235,977,176.73
  5. Step 5: Solve for x
    x = 235,977,176.73/20,368.46
  6. Step 6: Final answer
    x = 11,585.42

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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.