Home / 21,154.40-29,183.68-13,599.33

Finding the Fourth Proportional to 21,154.40, 29,183.68 and 13,599.33

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Solution

The fourth proportional to 21,154.40, 29,183.68 and 13,599.33 is: 18,761.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.40 : 29,183.68 = 13,599.33 : x
  2. Step 2: Convert to fraction form
    21,154.40/29,183.68 = 13,599.33/x
  3. Step 3: Cross multiply
    21,154.40x = 29,183.68 × 13,599.33
  4. Step 4: Simplify right side
    21,154.40x = 396,878,326.00
  5. Step 5: Solve for x
    x = 396,878,326.00/21,154.40
  6. Step 6: Final answer
    x = 18,761.03

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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.