Home / 28,820.40-43,230.60-8,043.90

Finding the Fourth Proportional to 28,820.40, 43,230.60 and 8,043.90

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Solution

The fourth proportional to 28,820.40, 43,230.60 and 8,043.90 is: 12,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.40 : 43,230.60 = 8,043.90 : x
  2. Step 2: Convert to fraction form
    28,820.40/43,230.60 = 8,043.90/x
  3. Step 3: Cross multiply
    28,820.40x = 43,230.60 × 8,043.90
  4. Step 4: Simplify right side
    28,820.40x = 347,742,623.34
  5. Step 5: Solve for x
    x = 347,742,623.34/28,820.40
  6. Step 6: Final answer
    x = 12,065.85

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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.