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Finding the Fourth Proportional to 12,322.80, 18,495.80 and 6,483.60

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Solution

The fourth proportional to 12,322.80, 18,495.80 and 6,483.60 is: 9,731.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,322.80 : 18,495.80 = 6,483.60 : x
  2. Step 2: Convert to fraction form
    12,322.80/18,495.80 = 6,483.60/x
  3. Step 3: Cross multiply
    12,322.80x = 18,495.80 × 6,483.60
  4. Step 4: Simplify right side
    12,322.80x = 119,919,368.88
  5. Step 5: Solve for x
    x = 119,919,368.88/12,322.80
  6. Step 6: Final answer
    x = 9,731.50

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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.