Home / 21,209.60-29,268.70-11,649.68

Finding the Fourth Proportional to 21,209.60, 29,268.70 and 11,649.68

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Solution

The fourth proportional to 21,209.60, 29,268.70 and 11,649.68 is: 16,076.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.60 : 29,268.70 = 11,649.68 : x
  2. Step 2: Convert to fraction form
    21,209.60/29,268.70 = 11,649.68/x
  3. Step 3: Cross multiply
    21,209.60x = 29,268.70 × 11,649.68
  4. Step 4: Simplify right side
    21,209.60x = 340,970,989.02
  5. Step 5: Solve for x
    x = 340,970,989.02/21,209.60
  6. Step 6: Final answer
    x = 16,076.26

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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.