Home / 20,268.10-27,969.52-11,316.45

Finding the Fourth Proportional to 20,268.10, 27,969.52 and 11,316.45

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Solution

The fourth proportional to 20,268.10, 27,969.52 and 11,316.45 is: 15,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.10 : 27,969.52 = 11,316.45 : x
  2. Step 2: Convert to fraction form
    20,268.10/27,969.52 = 11,316.45/x
  3. Step 3: Cross multiply
    20,268.10x = 27,969.52 × 11,316.45
  4. Step 4: Simplify right side
    20,268.10x = 316,515,674.60
  5. Step 5: Solve for x
    x = 316,515,674.60/20,268.10
  6. Step 6: Final answer
    x = 15,616.45

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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.