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Finding the Fourth Proportional to 14,466.62, 19,964.03 and 8,420.45

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Solution

The fourth proportional to 14,466.62, 19,964.03 and 8,420.45 is: 11,620.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,466.62 : 19,964.03 = 8,420.45 : x
  2. Step 2: Convert to fraction form
    14,466.62/19,964.03 = 8,420.45/x
  3. Step 3: Cross multiply
    14,466.62x = 19,964.03 × 8,420.45
  4. Step 4: Simplify right side
    14,466.62x = 168,106,124.22
  5. Step 5: Solve for x
    x = 168,106,124.22/14,466.62
  6. Step 6: Final answer
    x = 11,620.27

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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.