Home / 28,919.38-43,379.10-11,379.64

Finding the Fourth Proportional to 28,919.38, 43,379.10 and 11,379.64

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Solution

The fourth proportional to 28,919.38, 43,379.10 and 11,379.64 is: 17,069.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.38 : 43,379.10 = 11,379.64 : x
  2. Step 2: Convert to fraction form
    28,919.38/43,379.10 = 11,379.64/x
  3. Step 3: Cross multiply
    28,919.38x = 43,379.10 × 11,379.64
  4. Step 4: Simplify right side
    28,919.38x = 493,638,541.52
  5. Step 5: Solve for x
    x = 493,638,541.52/28,919.38
  6. Step 6: Final answer
    x = 17,069.47

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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.