Home / 21,699.60-29,945.88-12,268.08

Finding the Fourth Proportional to 21,699.60, 29,945.88 and 12,268.08

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Solution

The fourth proportional to 21,699.60, 29,945.88 and 12,268.08 is: 16,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.60 : 29,945.88 = 12,268.08 : x
  2. Step 2: Convert to fraction form
    21,699.60/29,945.88 = 12,268.08/x
  3. Step 3: Cross multiply
    21,699.60x = 29,945.88 × 12,268.08
  4. Step 4: Simplify right side
    21,699.60x = 367,378,451.51
  5. Step 5: Solve for x
    x = 367,378,451.51/21,699.60
  6. Step 6: Final answer
    x = 16,930.19

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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.