Home / 20,608.54-28,429.32-13,042.12

Finding the Fourth Proportional to 20,608.54, 28,429.32 and 13,042.12

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Solution

The fourth proportional to 20,608.54, 28,429.32 and 13,042.12 is: 17,991.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.54 : 28,429.32 = 13,042.12 : x
  2. Step 2: Convert to fraction form
    20,608.54/28,429.32 = 13,042.12/x
  3. Step 3: Cross multiply
    20,608.54x = 28,429.32 × 13,042.12
  4. Step 4: Simplify right side
    20,608.54x = 370,778,602.96
  5. Step 5: Solve for x
    x = 370,778,602.96/20,608.54
  6. Step 6: Final answer
    x = 17,991.50

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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.