Home / 20,318.24-28,042.46-12,765.67

Finding the Fourth Proportional to 20,318.24, 28,042.46 and 12,765.67

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Solution

The fourth proportional to 20,318.24, 28,042.46 and 12,765.67 is: 17,618.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.24 : 28,042.46 = 12,765.67 : x
  2. Step 2: Convert to fraction form
    20,318.24/28,042.46 = 12,765.67/x
  3. Step 3: Cross multiply
    20,318.24x = 28,042.46 × 12,765.67
  4. Step 4: Simplify right side
    20,318.24x = 357,980,704.28
  5. Step 5: Solve for x
    x = 357,980,704.28/20,318.24
  6. Step 6: Final answer
    x = 17,618.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.