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Finding the Fourth Proportional to 28,984.50, 43,460.78 and 8,988.46

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Solution

The fourth proportional to 28,984.50, 43,460.78 and 8,988.46 is: 13,477.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,984.50 : 43,460.78 = 8,988.46 : x
  2. Step 2: Convert to fraction form
    28,984.50/43,460.78 = 8,988.46/x
  3. Step 3: Cross multiply
    28,984.50x = 43,460.78 × 8,988.46
  4. Step 4: Simplify right side
    28,984.50x = 390,645,329.00
  5. Step 5: Solve for x
    x = 390,645,329.00/28,984.50
  6. Step 6: Final answer
    x = 13,477.73

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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.