Home / 21,980.24-30,343.21-12,546.98

Finding the Fourth Proportional to 21,980.24, 30,343.21 and 12,546.98

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Solution

The fourth proportional to 21,980.24, 30,343.21 and 12,546.98 is: 17,320.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.24 : 30,343.21 = 12,546.98 : x
  2. Step 2: Convert to fraction form
    21,980.24/30,343.21 = 12,546.98/x
  3. Step 3: Cross multiply
    21,980.24x = 30,343.21 × 12,546.98
  4. Step 4: Simplify right side
    21,980.24x = 380,715,649.01
  5. Step 5: Solve for x
    x = 380,715,649.01/21,980.24
  6. Step 6: Final answer
    x = 17,320.81

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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.