Home / 28,977.40-43,449.90-13,375.72

Finding the Fourth Proportional to 28,977.40, 43,449.90 and 13,375.72

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Solution

The fourth proportional to 28,977.40, 43,449.90 and 13,375.72 is: 20,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.40 : 43,449.90 = 13,375.72 : x
  2. Step 2: Convert to fraction form
    28,977.40/43,449.90 = 13,375.72/x
  3. Step 3: Cross multiply
    28,977.40x = 43,449.90 × 13,375.72
  4. Step 4: Simplify right side
    28,977.40x = 581,173,696.43
  5. Step 5: Solve for x
    x = 581,173,696.43/28,977.40
  6. Step 6: Final answer
    x = 20,056.10

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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.