Home / 21,883.41-30,202.61-12,455.01

Finding the Fourth Proportional to 21,883.41, 30,202.61 and 12,455.01

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Solution

The fourth proportional to 21,883.41, 30,202.61 and 12,455.01 is: 17,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.41 : 30,202.61 = 12,455.01 : x
  2. Step 2: Convert to fraction form
    21,883.41/30,202.61 = 12,455.01/x
  3. Step 3: Cross multiply
    21,883.41x = 30,202.61 × 12,455.01
  4. Step 4: Simplify right side
    21,883.41x = 376,173,747.30
  5. Step 5: Solve for x
    x = 376,173,747.30/21,883.41
  6. Step 6: Final answer
    x = 17,189.91

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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.