Home / 21,020.64-29,008.80-11,589.18

Finding the Fourth Proportional to 21,020.64, 29,008.80 and 11,589.18

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Solution

The fourth proportional to 21,020.64, 29,008.80 and 11,589.18 is: 15,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.64 : 29,008.80 = 11,589.18 : x
  2. Step 2: Convert to fraction form
    21,020.64/29,008.80 = 11,589.18/x
  3. Step 3: Cross multiply
    21,020.64x = 29,008.80 × 11,589.18
  4. Step 4: Simplify right side
    21,020.64x = 336,188,204.78
  5. Step 5: Solve for x
    x = 336,188,204.78/21,020.64
  6. Step 6: Final answer
    x = 15,993.24

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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.