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Finding the Fourth Proportional to 13,604.63, 18,777.62 and 8,303.88

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Solution

The fourth proportional to 13,604.63, 18,777.62 and 8,303.88 is: 11,461.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.63 : 18,777.62 = 8,303.88 : x
  2. Step 2: Convert to fraction form
    13,604.63/18,777.62 = 8,303.88/x
  3. Step 3: Cross multiply
    13,604.63x = 18,777.62 × 8,303.88
  4. Step 4: Simplify right side
    13,604.63x = 155,927,194.34
  5. Step 5: Solve for x
    x = 155,927,194.34/13,604.63
  6. Step 6: Final answer
    x = 11,461.34

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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.