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Finding the Fourth Proportional to 14,665.62, 20,265.40 and 10,679.80

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Solution

The fourth proportional to 14,665.62, 20,265.40 and 10,679.80 is: 14,757.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,665.62 : 20,265.40 = 10,679.80 : x
  2. Step 2: Convert to fraction form
    14,665.62/20,265.40 = 10,679.80/x
  3. Step 3: Cross multiply
    14,665.62x = 20,265.40 × 10,679.80
  4. Step 4: Simplify right side
    14,665.62x = 216,430,418.92
  5. Step 5: Solve for x
    x = 216,430,418.92/14,665.62
  6. Step 6: Final answer
    x = 14,757.67

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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.