Home / 21,391.64-29,528.68-19,149.56

Finding the Fourth Proportional to 21,391.64, 29,528.68 and 19,149.56

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Solution

The fourth proportional to 21,391.64, 29,528.68 and 19,149.56 is: 26,433.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.64 : 29,528.68 = 19,149.56 : x
  2. Step 2: Convert to fraction form
    21,391.64/29,528.68 = 19,149.56/x
  3. Step 3: Cross multiply
    21,391.64x = 29,528.68 × 19,149.56
  4. Step 4: Simplify right side
    21,391.64x = 565,461,229.38
  5. Step 5: Solve for x
    x = 565,461,229.38/21,391.64
  6. Step 6: Final answer
    x = 26,433.75

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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.