Home / 21,540.68-29,725.74-11,980.52

Finding the Fourth Proportional to 21,540.68, 29,725.74 and 11,980.52

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Solution

The fourth proportional to 21,540.68, 29,725.74 and 11,980.52 is: 16,532.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.68 : 29,725.74 = 11,980.52 : x
  2. Step 2: Convert to fraction form
    21,540.68/29,725.74 = 11,980.52/x
  3. Step 3: Cross multiply
    21,540.68x = 29,725.74 × 11,980.52
  4. Step 4: Simplify right side
    21,540.68x = 356,129,673.96
  5. Step 5: Solve for x
    x = 356,129,673.96/21,540.68
  6. Step 6: Final answer
    x = 16,532.89

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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.