Home / 21,760.96-29,805.16-20,484.32

Finding the Fourth Proportional to 21,760.96, 29,805.16 and 20,484.32

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Solution

The fourth proportional to 21,760.96, 29,805.16 and 20,484.32 is: 28,056.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.96 : 29,805.16 = 20,484.32 : x
  2. Step 2: Convert to fraction form
    21,760.96/29,805.16 = 20,484.32/x
  3. Step 3: Cross multiply
    21,760.96x = 29,805.16 × 20,484.32
  4. Step 4: Simplify right side
    21,760.96x = 610,538,435.09
  5. Step 5: Solve for x
    x = 610,538,435.09/21,760.96
  6. Step 6: Final answer
    x = 28,056.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.