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Finding the Fourth Proportional to 28,978.60, 43,500.30 and 22,433.80

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Solution

The fourth proportional to 28,978.60, 43,500.30 and 22,433.80 is: 33,675.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978.60 : 43,500.30 = 22,433.80 : x
  2. Step 2: Convert to fraction form
    28,978.60/43,500.30 = 22,433.80/x
  3. Step 3: Cross multiply
    28,978.60x = 43,500.30 × 22,433.80
  4. Step 4: Simplify right side
    28,978.60x = 975,877,030.14
  5. Step 5: Solve for x
    x = 975,877,030.14/28,978.60
  6. Step 6: Final answer
    x = 33,675.78

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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.