Home / 21,887.58-30,204.84-12,456.18

Finding the Fourth Proportional to 21,887.58, 30,204.84 and 12,456.18

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Solution

The fourth proportional to 21,887.58, 30,204.84 and 12,456.18 is: 17,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.58 : 30,204.84 = 12,456.18 : x
  2. Step 2: Convert to fraction form
    21,887.58/30,204.84 = 12,456.18/x
  3. Step 3: Cross multiply
    21,887.58x = 30,204.84 × 12,456.18
  4. Step 4: Simplify right side
    21,887.58x = 376,236,923.91
  5. Step 5: Solve for x
    x = 376,236,923.91/21,887.58
  6. Step 6: Final answer
    x = 17,189.52

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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.