Home / 13,680.62-20,559.40-8,134.96

Finding the Fourth Proportional to 13,680.62, 20,559.40 and 8,134.96

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Solution

The fourth proportional to 13,680.62, 20,559.40 and 8,134.96 is: 12,225.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.62 : 20,559.40 = 8,134.96 : x
  2. Step 2: Convert to fraction form
    13,680.62/20,559.40 = 8,134.96/x
  3. Step 3: Cross multiply
    13,680.62x = 20,559.40 × 8,134.96
  4. Step 4: Simplify right side
    13,680.62x = 167,249,896.62
  5. Step 5: Solve for x
    x = 167,249,896.62/13,680.62
  6. Step 6: Final answer
    x = 12,225.32

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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.