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Finding the Fourth Proportional to 12,410.80, 18,583.80 and 8,004.40

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Solution

The fourth proportional to 12,410.80, 18,583.80 and 8,004.40 is: 11,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,410.80 : 18,583.80 = 8,004.40 : x
  2. Step 2: Convert to fraction form
    12,410.80/18,583.80 = 8,004.40/x
  3. Step 3: Cross multiply
    12,410.80x = 18,583.80 × 8,004.40
  4. Step 4: Simplify right side
    12,410.80x = 148,752,168.72
  5. Step 5: Solve for x
    x = 148,752,168.72/12,410.80
  6. Step 6: Final answer
    x = 11,985.70

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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.