Home / 21,882.06-30,193.26-12,320.46

Finding the Fourth Proportional to 21,882.06, 30,193.26 and 12,320.46

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Solution

The fourth proportional to 21,882.06, 30,193.26 and 12,320.46 is: 16,999.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,882.06 : 30,193.26 = 12,320.46 : x
  2. Step 2: Convert to fraction form
    21,882.06/30,193.26 = 12,320.46/x
  3. Step 3: Cross multiply
    21,882.06x = 30,193.26 × 12,320.46
  4. Step 4: Simplify right side
    21,882.06x = 371,994,852.10
  5. Step 5: Solve for x
    x = 371,994,852.10/21,882.06
  6. Step 6: Final answer
    x = 16,999.99

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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.