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Finding the Fourth Proportional to 14,754.88, 20,361.73 and 8,130.88

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Solution

The fourth proportional to 14,754.88, 20,361.73 and 8,130.88 is: 11,220.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,754.88 : 20,361.73 = 8,130.88 : x
  2. Step 2: Convert to fraction form
    14,754.88/20,361.73 = 8,130.88/x
  3. Step 3: Cross multiply
    14,754.88x = 20,361.73 × 8,130.88
  4. Step 4: Simplify right side
    14,754.88x = 165,558,681.41
  5. Step 5: Solve for x
    x = 165,558,681.41/14,754.88
  6. Step 6: Final answer
    x = 11,220.61

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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.