Home / 14,920.42-20,590.67-8,206.54

Finding the Fourth Proportional to 14,920.42, 20,590.67 and 8,206.54

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Solution

The fourth proportional to 14,920.42, 20,590.67 and 8,206.54 is: 11,325.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.42 : 20,590.67 = 8,206.54 : x
  2. Step 2: Convert to fraction form
    14,920.42/20,590.67 = 8,206.54/x
  3. Step 3: Cross multiply
    14,920.42x = 20,590.67 × 8,206.54
  4. Step 4: Simplify right side
    14,920.42x = 168,978,156.98
  5. Step 5: Solve for x
    x = 168,978,156.98/14,920.42
  6. Step 6: Final answer
    x = 11,325.29

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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.