Home / 28,914.12-43,372.74-8,139.24

Finding the Fourth Proportional to 28,914.12, 43,372.74 and 8,139.24

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Solution

The fourth proportional to 28,914.12, 43,372.74 and 8,139.24 is: 12,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.12 : 43,372.74 = 8,139.24 : x
  2. Step 2: Convert to fraction form
    28,914.12/43,372.74 = 8,139.24/x
  3. Step 3: Cross multiply
    28,914.12x = 43,372.74 × 8,139.24
  4. Step 4: Simplify right side
    28,914.12x = 353,021,140.32
  5. Step 5: Solve for x
    x = 353,021,140.32/28,914.12
  6. Step 6: Final answer
    x = 12,209.30

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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.