Home / 21,081.18-29,079.81-13,524.84

Finding the Fourth Proportional to 21,081.18, 29,079.81 and 13,524.84

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Solution

The fourth proportional to 21,081.18, 29,079.81 and 13,524.84 is: 18,656.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.18 : 29,079.81 = 13,524.84 : x
  2. Step 2: Convert to fraction form
    21,081.18/29,079.81 = 13,524.84/x
  3. Step 3: Cross multiply
    21,081.18x = 29,079.81 × 13,524.84
  4. Step 4: Simplify right side
    21,081.18x = 393,299,777.48
  5. Step 5: Solve for x
    x = 393,299,777.48/21,081.18
  6. Step 6: Final answer
    x = 18,656.44

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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.