Home / 21,268.55-29,357.04-12,318.25

Finding the Fourth Proportional to 21,268.55, 29,357.04 and 12,318.25

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Solution

The fourth proportional to 21,268.55, 29,357.04 and 12,318.25 is: 17,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.55 : 29,357.04 = 12,318.25 : x
  2. Step 2: Convert to fraction form
    21,268.55/29,357.04 = 12,318.25/x
  3. Step 3: Cross multiply
    21,268.55x = 29,357.04 × 12,318.25
  4. Step 4: Simplify right side
    21,268.55x = 361,627,330.78
  5. Step 5: Solve for x
    x = 361,627,330.78/21,268.55
  6. Step 6: Final answer
    x = 17,002.92

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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.