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Finding the Fourth Proportional to 14,515, 20,030.70 and 8,227.78

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Solution

The fourth proportional to 14,515, 20,030.70 and 8,227.78 is: 11,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515 : 20,030.70 = 8,227.78 : x
  2. Step 2: Convert to fraction form
    14,515/20,030.70 = 8,227.78/x
  3. Step 3: Cross multiply
    14,515x = 20,030.70 × 8,227.78
  4. Step 4: Simplify right side
    14,515x = 164,808,192.85
  5. Step 5: Solve for x
    x = 164,808,192.85/14,515
  6. Step 6: Final answer
    x = 11,354.34

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Double scale
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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.