Home / 21,536.75-29,725.47-13,589.74

Finding the Fourth Proportional to 21,536.75, 29,725.47 and 13,589.74

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Solution

The fourth proportional to 21,536.75, 29,725.47 and 13,589.74 is: 18,756.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,536.75 : 29,725.47 = 13,589.74 : x
  2. Step 2: Convert to fraction form
    21,536.75/29,725.47 = 13,589.74/x
  3. Step 3: Cross multiply
    21,536.75x = 29,725.47 × 13,589.74
  4. Step 4: Simplify right side
    21,536.75x = 403,961,408.68
  5. Step 5: Solve for x
    x = 403,961,408.68/21,536.75
  6. Step 6: Final answer
    x = 18,756.84

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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.