Home / 21,208.64-29,268.96-15,895.04

Finding the Fourth Proportional to 21,208.64, 29,268.96 and 15,895.04

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Solution

The fourth proportional to 21,208.64, 29,268.96 and 15,895.04 is: 21,935.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.64 : 29,268.96 = 15,895.04 : x
  2. Step 2: Convert to fraction form
    21,208.64/29,268.96 = 15,895.04/x
  3. Step 3: Cross multiply
    21,208.64x = 29,268.96 × 15,895.04
  4. Step 4: Simplify right side
    21,208.64x = 465,231,289.96
  5. Step 5: Solve for x
    x = 465,231,289.96/21,208.64
  6. Step 6: Final answer
    x = 21,935.93

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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.