Home / 20,852.44-28,776.36-11,421.34

Finding the Fourth Proportional to 20,852.44, 28,776.36 and 11,421.34

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Solution

The fourth proportional to 20,852.44, 28,776.36 and 11,421.34 is: 15,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.44 : 28,776.36 = 11,421.34 : x
  2. Step 2: Convert to fraction form
    20,852.44/28,776.36 = 11,421.34/x
  3. Step 3: Cross multiply
    20,852.44x = 28,776.36 × 11,421.34
  4. Step 4: Simplify right side
    20,852.44x = 328,664,562.41
  5. Step 5: Solve for x
    x = 328,664,562.41/20,852.44
  6. Step 6: Final answer
    x = 15,761.45

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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.