Home / 21,887.46-30,205.45-12,455.82

Finding the Fourth Proportional to 21,887.46, 30,205.45 and 12,455.82

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Solution

The fourth proportional to 21,887.46, 30,205.45 and 12,455.82 is: 17,189.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.46 : 30,205.45 = 12,455.82 : x
  2. Step 2: Convert to fraction form
    21,887.46/30,205.45 = 12,455.82/x
  3. Step 3: Cross multiply
    21,887.46x = 30,205.45 × 12,455.82
  4. Step 4: Simplify right side
    21,887.46x = 376,233,648.22
  5. Step 5: Solve for x
    x = 376,233,648.22/21,887.46
  6. Step 6: Final answer
    x = 17,189.46

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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.