Home / 21,218.85-29,282.03-11,659.35

Finding the Fourth Proportional to 21,218.85, 29,282.03 and 11,659.35

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Solution

The fourth proportional to 21,218.85, 29,282.03 and 11,659.35 is: 16,089.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.85 : 29,282.03 = 11,659.35 : x
  2. Step 2: Convert to fraction form
    21,218.85/29,282.03 = 11,659.35/x
  3. Step 3: Cross multiply
    21,218.85x = 29,282.03 × 11,659.35
  4. Step 4: Simplify right side
    21,218.85x = 341,409,436.48
  5. Step 5: Solve for x
    x = 341,409,436.48/21,218.85
  6. Step 6: Final answer
    x = 16,089.91

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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.