Home / 21,817.44-30,102.84-12,864.24

Finding the Fourth Proportional to 21,817.44, 30,102.84 and 12,864.24

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Solution

The fourth proportional to 21,817.44, 30,102.84 and 12,864.24 is: 17,749.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.44 : 30,102.84 = 12,864.24 : x
  2. Step 2: Convert to fraction form
    21,817.44/30,102.84 = 12,864.24/x
  3. Step 3: Cross multiply
    21,817.44x = 30,102.84 × 12,864.24
  4. Step 4: Simplify right side
    21,817.44x = 387,250,158.44
  5. Step 5: Solve for x
    x = 387,250,158.44/21,817.44
  6. Step 6: Final answer
    x = 17,749.57

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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.