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Finding the Fourth Proportional to 28,941.60, 43,411.95 and 9,220.03

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Solution

The fourth proportional to 28,941.60, 43,411.95 and 9,220.03 is: 13,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,941.60 : 43,411.95 = 9,220.03 : x
  2. Step 2: Convert to fraction form
    28,941.60/43,411.95 = 9,220.03/x
  3. Step 3: Cross multiply
    28,941.60x = 43,411.95 × 9,220.03
  4. Step 4: Simplify right side
    28,941.60x = 400,259,372.83
  5. Step 5: Solve for x
    x = 400,259,372.83/28,941.60
  6. Step 6: Final answer
    x = 13,829.90

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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.