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Finding the Fourth Proportional to 28,984.76, 43,477.14 and 8,208.26

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Solution

The fourth proportional to 28,984.76, 43,477.14 and 8,208.26 is: 12,312.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,984.76 : 43,477.14 = 8,208.26 : x
  2. Step 2: Convert to fraction form
    28,984.76/43,477.14 = 8,208.26/x
  3. Step 3: Cross multiply
    28,984.76x = 43,477.14 × 8,208.26
  4. Step 4: Simplify right side
    28,984.76x = 356,871,669.18
  5. Step 5: Solve for x
    x = 356,871,669.18/28,984.76
  6. Step 6: Final answer
    x = 12,312.39

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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.