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Finding the Fourth Proportional to 13,659.52, 18,810.48 and 11,866.18

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Solution

The fourth proportional to 13,659.52, 18,810.48 and 11,866.18 is: 16,340.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.52 : 18,810.48 = 11,866.18 : x
  2. Step 2: Convert to fraction form
    13,659.52/18,810.48 = 11,866.18/x
  3. Step 3: Cross multiply
    13,659.52x = 18,810.48 × 11,866.18
  4. Step 4: Simplify right side
    13,659.52x = 223,208,541.57
  5. Step 5: Solve for x
    x = 223,208,541.57/13,659.52
  6. Step 6: Final answer
    x = 16,340.88

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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.