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Finding the Fourth Proportional to 28,850.18, 43,161.42 and 21,850.42

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Solution

The fourth proportional to 28,850.18, 43,161.42 and 21,850.42 is: 32,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,850.18 : 43,161.42 = 21,850.42 : x
  2. Step 2: Convert to fraction form
    28,850.18/43,161.42 = 21,850.42/x
  3. Step 3: Cross multiply
    28,850.18x = 43,161.42 × 21,850.42
  4. Step 4: Simplify right side
    28,850.18x = 943,095,154.80
  5. Step 5: Solve for x
    x = 943,095,154.80/28,850.18
  6. Step 6: Final answer
    x = 32,689.40

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1.5x scale

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.