Home / 21,514.84-29,685.63-13,016.75

Finding the Fourth Proportional to 21,514.84, 29,685.63 and 13,016.75

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Solution

The fourth proportional to 21,514.84, 29,685.63 and 13,016.75 is: 17,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,514.84 : 29,685.63 = 13,016.75 : x
  2. Step 2: Convert to fraction form
    21,514.84/29,685.63 = 13,016.75/x
  3. Step 3: Cross multiply
    21,514.84x = 29,685.63 × 13,016.75
  4. Step 4: Simplify right side
    21,514.84x = 386,410,607.75
  5. Step 5: Solve for x
    x = 386,410,607.75/21,514.84
  6. Step 6: Final answer
    x = 17,960.19

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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.