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Finding the Fourth Proportional to 12,586.01, 17,367.80 and 6,920.67

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Solution

The fourth proportional to 12,586.01, 17,367.80 and 6,920.67 is: 9,550.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.01 : 17,367.80 = 6,920.67 : x
  2. Step 2: Convert to fraction form
    12,586.01/17,367.80 = 6,920.67/x
  3. Step 3: Cross multiply
    12,586.01x = 17,367.80 × 6,920.67
  4. Step 4: Simplify right side
    12,586.01x = 120,196,829.73
  5. Step 5: Solve for x
    x = 120,196,829.73/12,586.01
  6. Step 6: Final answer
    x = 9,550.03

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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.