Home / 28,779.24-43,170.60-12,122.64

Finding the Fourth Proportional to 28,779.24, 43,170.60 and 12,122.64

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Solution

The fourth proportional to 28,779.24, 43,170.60 and 12,122.64 is: 18,184.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.24 : 43,170.60 = 12,122.64 : x
  2. Step 2: Convert to fraction form
    28,779.24/43,170.60 = 12,122.64/x
  3. Step 3: Cross multiply
    28,779.24x = 43,170.60 × 12,122.64
  4. Step 4: Simplify right side
    28,779.24x = 523,341,642.38
  5. Step 5: Solve for x
    x = 523,341,642.38/28,779.24
  6. Step 6: Final answer
    x = 18,184.69

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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.