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Finding the Fourth Proportional to 14,851.50, 20,495.07 and 8,228.78

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Solution

The fourth proportional to 14,851.50, 20,495.07 and 8,228.78 is: 11,355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,851.50 : 20,495.07 = 8,228.78 : x
  2. Step 2: Convert to fraction form
    14,851.50/20,495.07 = 8,228.78/x
  3. Step 3: Cross multiply
    14,851.50x = 20,495.07 × 8,228.78
  4. Step 4: Simplify right side
    14,851.50x = 168,649,422.11
  5. Step 5: Solve for x
    x = 168,649,422.11/14,851.50
  6. Step 6: Final answer
    x = 11,355.72

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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.