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Finding the Fourth Proportional to 14,783.70, 20,401.36 and 8,069.37

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Solution

The fourth proportional to 14,783.70, 20,401.36 and 8,069.37 is: 11,135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,783.70 : 20,401.36 = 8,069.37 : x
  2. Step 2: Convert to fraction form
    14,783.70/20,401.36 = 8,069.37/x
  3. Step 3: Cross multiply
    14,783.70x = 20,401.36 × 8,069.37
  4. Step 4: Simplify right side
    14,783.70x = 164,626,000.16
  5. Step 5: Solve for x
    x = 164,626,000.16/14,783.70
  6. Step 6: Final answer
    x = 11,135.65

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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.