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Finding the Fourth Proportional to 18,908.58, 26,037.56 and 18,489.02

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Solution

The fourth proportional to 18,908.58, 26,037.56 and 18,489.02 is: 25,459.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.58 : 26,037.56 = 18,489.02 : x
  2. Step 2: Convert to fraction form
    18,908.58/26,037.56 = 18,489.02/x
  3. Step 3: Cross multiply
    18,908.58x = 26,037.56 × 18,489.02
  4. Step 4: Simplify right side
    18,908.58x = 481,408,967.59
  5. Step 5: Solve for x
    x = 481,408,967.59/18,908.58
  6. Step 6: Final answer
    x = 25,459.82

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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.