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Finding the Fourth Proportional to 14,396.70, 19,860.66 and 8,424.67

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Solution

The fourth proportional to 14,396.70, 19,860.66 and 8,424.67 is: 11,622.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,396.70 : 19,860.66 = 8,424.67 : x
  2. Step 2: Convert to fraction form
    14,396.70/19,860.66 = 8,424.67/x
  3. Step 3: Cross multiply
    14,396.70x = 19,860.66 × 8,424.67
  4. Step 4: Simplify right side
    14,396.70x = 167,319,514.01
  5. Step 5: Solve for x
    x = 167,319,514.01/14,396.70
  6. Step 6: Final answer
    x = 11,622.07

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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.