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Finding the Fourth Proportional to 14,515, 21,775.63 and 4,519.55

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Solution

The fourth proportional to 14,515, 21,775.63 and 4,519.55 is: 6,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515 : 21,775.63 = 4,519.55 : x
  2. Step 2: Convert to fraction form
    14,515/21,775.63 = 4,519.55/x
  3. Step 3: Cross multiply
    14,515x = 21,775.63 × 4,519.55
  4. Step 4: Simplify right side
    14,515x = 98,416,048.57
  5. Step 5: Solve for x
    x = 98,416,048.57/14,515
  6. Step 6: Final answer
    x = 6,780.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.