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Finding the Fourth Proportional to 13,726.60, 18,950.86 and 8,695.12

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Solution

The fourth proportional to 13,726.60, 18,950.86 and 8,695.12 is: 12,004.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.60 : 18,950.86 = 8,695.12 : x
  2. Step 2: Convert to fraction form
    13,726.60/18,950.86 = 8,695.12/x
  3. Step 3: Cross multiply
    13,726.60x = 18,950.86 × 8,695.12
  4. Step 4: Simplify right side
    13,726.60x = 164,780,001.80
  5. Step 5: Solve for x
    x = 164,780,001.80/13,726.60
  6. Step 6: Final answer
    x = 12,004.43

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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.