Home / 28,703.08-39,640.26-19,773.64

Finding the Fourth Proportional to 28,703.08, 39,640.26 and 19,773.64

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Solution

The fourth proportional to 28,703.08, 39,640.26 and 19,773.64 is: 27,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.08 : 39,640.26 = 19,773.64 : x
  2. Step 2: Convert to fraction form
    28,703.08/39,640.26 = 19,773.64/x
  3. Step 3: Cross multiply
    28,703.08x = 39,640.26 × 19,773.64
  4. Step 4: Simplify right side
    28,703.08x = 783,832,230.75
  5. Step 5: Solve for x
    x = 783,832,230.75/28,703.08
  6. Step 6: Final answer
    x = 27,308.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.