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Finding the Fourth Proportional to 18,984.08, 28,404.84 and 17,984

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Solution

The fourth proportional to 18,984.08, 28,404.84 and 17,984 is: 26,908.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.08 : 28,404.84 = 17,984 : x
  2. Step 2: Convert to fraction form
    18,984.08/28,404.84 = 17,984/x
  3. Step 3: Cross multiply
    18,984.08x = 28,404.84 × 17,984
  4. Step 4: Simplify right side
    18,984.08x = 510,832,642.56
  5. Step 5: Solve for x
    x = 510,832,642.56/18,984.08
  6. Step 6: Final answer
    x = 26,908.48

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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.