Home / 20,818.06-28,740.81-13,764.94

Finding the Fourth Proportional to 20,818.06, 28,740.81 and 13,764.94

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Solution

The fourth proportional to 20,818.06, 28,740.81 and 13,764.94 is: 19,003.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.06 : 28,740.81 = 13,764.94 : x
  2. Step 2: Convert to fraction form
    20,818.06/28,740.81 = 13,764.94/x
  3. Step 3: Cross multiply
    20,818.06x = 28,740.81 × 13,764.94
  4. Step 4: Simplify right side
    20,818.06x = 395,615,525.20
  5. Step 5: Solve for x
    x = 395,615,525.20/20,818.06
  6. Step 6: Final answer
    x = 19,003.48

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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.