Home / 20,704.20-28,567.40-13,544.60

Finding the Fourth Proportional to 20,704.20, 28,567.40 and 13,544.60

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Solution

The fourth proportional to 20,704.20, 28,567.40 and 13,544.60 is: 18,688.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.20 : 28,567.40 = 13,544.60 : x
  2. Step 2: Convert to fraction form
    20,704.20/28,567.40 = 13,544.60/x
  3. Step 3: Cross multiply
    20,704.20x = 28,567.40 × 13,544.60
  4. Step 4: Simplify right side
    20,704.20x = 386,934,006.04
  5. Step 5: Solve for x
    x = 386,934,006.04/20,704.20
  6. Step 6: Final answer
    x = 18,688.67

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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.