Home / 21,273.48-29,334.42-20,789.64

Finding the Fourth Proportional to 21,273.48, 29,334.42 and 20,789.64

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Solution

The fourth proportional to 21,273.48, 29,334.42 and 20,789.64 is: 28,667.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.48 : 29,334.42 = 20,789.64 : x
  2. Step 2: Convert to fraction form
    21,273.48/29,334.42 = 20,789.64/x
  3. Step 3: Cross multiply
    21,273.48x = 29,334.42 × 20,789.64
  4. Step 4: Simplify right side
    21,273.48x = 609,852,031.41
  5. Step 5: Solve for x
    x = 609,852,031.41/21,273.48
  6. Step 6: Final answer
    x = 28,667.24

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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.