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Finding the Fourth Proportional to 12,558.63, 18,841.10 and 8,868.06

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Solution

The fourth proportional to 12,558.63, 18,841.10 and 8,868.06 is: 13,304.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.63 : 18,841.10 = 8,868.06 : x
  2. Step 2: Convert to fraction form
    12,558.63/18,841.10 = 8,868.06/x
  3. Step 3: Cross multiply
    12,558.63x = 18,841.10 × 8,868.06
  4. Step 4: Simplify right side
    12,558.63x = 167,083,960.93
  5. Step 5: Solve for x
    x = 167,083,960.93/12,558.63
  6. Step 6: Final answer
    x = 13,304.31

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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.