Home / 20,641.96-28,485.78-11,210.44

Finding the Fourth Proportional to 20,641.96, 28,485.78 and 11,210.44

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Solution

The fourth proportional to 20,641.96, 28,485.78 and 11,210.44 is: 15,470.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.96 : 28,485.78 = 11,210.44 : x
  2. Step 2: Convert to fraction form
    20,641.96/28,485.78 = 11,210.44/x
  3. Step 3: Cross multiply
    20,641.96x = 28,485.78 × 11,210.44
  4. Step 4: Simplify right side
    20,641.96x = 319,338,127.54
  5. Step 5: Solve for x
    x = 319,338,127.54/20,641.96
  6. Step 6: Final answer
    x = 15,470.34

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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.