Home / 21,321.09-29,435.13-14,784.39

Finding the Fourth Proportional to 21,321.09, 29,435.13 and 14,784.39

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Solution

The fourth proportional to 21,321.09, 29,435.13 and 14,784.39 is: 20,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.09 : 29,435.13 = 14,784.39 : x
  2. Step 2: Convert to fraction form
    21,321.09/29,435.13 = 14,784.39/x
  3. Step 3: Cross multiply
    21,321.09x = 29,435.13 × 14,784.39
  4. Step 4: Simplify right side
    21,321.09x = 435,180,441.62
  5. Step 5: Solve for x
    x = 435,180,441.62/21,321.09
  6. Step 6: Final answer
    x = 20,410.80

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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.