Home / 21,533.82-29,725.79-20,188.68

Finding the Fourth Proportional to 21,533.82, 29,725.79 and 20,188.68

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Solution

The fourth proportional to 21,533.82, 29,725.79 and 20,188.68 is: 27,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,533.82 : 29,725.79 = 20,188.68 : x
  2. Step 2: Convert to fraction form
    21,533.82/29,725.79 = 20,188.68/x
  3. Step 3: Cross multiply
    21,533.82x = 29,725.79 × 20,188.68
  4. Step 4: Simplify right side
    21,533.82x = 600,124,462.06
  5. Step 5: Solve for x
    x = 600,124,462.06/21,533.82
  6. Step 6: Final answer
    x = 27,868.93

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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.