Home / 28,538.94-42,779.58-11,908.20

Finding the Fourth Proportional to 28,538.94, 42,779.58 and 11,908.20

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Solution

The fourth proportional to 28,538.94, 42,779.58 and 11,908.20 is: 17,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.94 : 42,779.58 = 11,908.20 : x
  2. Step 2: Convert to fraction form
    28,538.94/42,779.58 = 11,908.20/x
  3. Step 3: Cross multiply
    28,538.94x = 42,779.58 × 11,908.20
  4. Step 4: Simplify right side
    28,538.94x = 509,427,794.56
  5. Step 5: Solve for x
    x = 509,427,794.56/28,538.94
  6. Step 6: Final answer
    x = 17,850.27

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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.