Home / 28,640.96-39,509.60-18,010.56

Finding the Fourth Proportional to 28,640.96, 39,509.60 and 18,010.56

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Solution

The fourth proportional to 28,640.96, 39,509.60 and 18,010.56 is: 24,845.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,640.96 : 39,509.60 = 18,010.56 : x
  2. Step 2: Convert to fraction form
    28,640.96/39,509.60 = 18,010.56/x
  3. Step 3: Cross multiply
    28,640.96x = 39,509.60 × 18,010.56
  4. Step 4: Simplify right side
    28,640.96x = 711,590,021.38
  5. Step 5: Solve for x
    x = 711,590,021.38/28,640.96
  6. Step 6: Final answer
    x = 24,845.19

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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.