Home / 28,765.20-43,130.20-11,214.80

Finding the Fourth Proportional to 28,765.20, 43,130.20 and 11,214.80

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Solution

The fourth proportional to 28,765.20, 43,130.20 and 11,214.80 is: 16,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.20 : 43,130.20 = 11,214.80 : x
  2. Step 2: Convert to fraction form
    28,765.20/43,130.20 = 11,214.80/x
  3. Step 3: Cross multiply
    28,765.20x = 43,130.20 × 11,214.80
  4. Step 4: Simplify right side
    28,765.20x = 483,696,566.96
  5. Step 5: Solve for x
    x = 483,696,566.96/28,765.20
  6. Step 6: Final answer
    x = 16,815.34

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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.