Home / 21,881.72-30,197.94-12,453.32

Finding the Fourth Proportional to 21,881.72, 30,197.94 and 12,453.32

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Solution

The fourth proportional to 21,881.72, 30,197.94 and 12,453.32 is: 17,186.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.72 : 30,197.94 = 12,453.32 : x
  2. Step 2: Convert to fraction form
    21,881.72/30,197.94 = 12,453.32/x
  3. Step 3: Cross multiply
    21,881.72x = 30,197.94 × 12,453.32
  4. Step 4: Simplify right side
    21,881.72x = 376,064,610.16
  5. Step 5: Solve for x
    x = 376,064,610.16/21,881.72
  6. Step 6: Final answer
    x = 17,186.25

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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.