Home / 21,416.25-29,554.47-11,987.04

Finding the Fourth Proportional to 21,416.25, 29,554.47 and 11,987.04

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Solution

The fourth proportional to 21,416.25, 29,554.47 and 11,987.04 is: 16,542.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.25 : 29,554.47 = 11,987.04 : x
  2. Step 2: Convert to fraction form
    21,416.25/29,554.47 = 11,987.04/x
  3. Step 3: Cross multiply
    21,416.25x = 29,554.47 × 11,987.04
  4. Step 4: Simplify right side
    21,416.25x = 354,270,614.07
  5. Step 5: Solve for x
    x = 354,270,614.07/21,416.25
  6. Step 6: Final answer
    x = 16,542.14

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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.