Home / 21,824.70-30,116.79-12,393.42

Finding the Fourth Proportional to 21,824.70, 30,116.79 and 12,393.42

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Solution

The fourth proportional to 21,824.70, 30,116.79 and 12,393.42 is: 17,102.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.70 : 30,116.79 = 12,393.42 : x
  2. Step 2: Convert to fraction form
    21,824.70/30,116.79 = 12,393.42/x
  3. Step 3: Cross multiply
    21,824.70x = 30,116.79 × 12,393.42
  4. Step 4: Simplify right side
    21,824.70x = 373,250,027.52
  5. Step 5: Solve for x
    x = 373,250,027.52/21,824.70
  6. Step 6: Final answer
    x = 17,102.18

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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.