Home / 21,932.03-30,263.97-12,977.78

Finding the Fourth Proportional to 21,932.03, 30,263.97 and 12,977.78

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Solution

The fourth proportional to 21,932.03, 30,263.97 and 12,977.78 is: 17,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.03 : 30,263.97 = 12,977.78 : x
  2. Step 2: Convert to fraction form
    21,932.03/30,263.97 = 12,977.78/x
  3. Step 3: Cross multiply
    21,932.03x = 30,263.97 × 12,977.78
  4. Step 4: Simplify right side
    21,932.03x = 392,759,144.59
  5. Step 5: Solve for x
    x = 392,759,144.59/21,932.03
  6. Step 6: Final answer
    x = 17,908.02

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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.