Home / 21,248.28-29,322.21-11,816.64

Finding the Fourth Proportional to 21,248.28, 29,322.21 and 11,816.64

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Solution

The fourth proportional to 21,248.28, 29,322.21 and 11,816.64 is: 16,306.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.28 : 29,322.21 = 11,816.64 : x
  2. Step 2: Convert to fraction form
    21,248.28/29,322.21 = 11,816.64/x
  3. Step 3: Cross multiply
    21,248.28x = 29,322.21 × 11,816.64
  4. Step 4: Simplify right side
    21,248.28x = 346,489,999.57
  5. Step 5: Solve for x
    x = 346,489,999.57/21,248.28
  6. Step 6: Final answer
    x = 16,306.73

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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.