Home / 21,343.14-29,443.23-13,382.46

Finding the Fourth Proportional to 21,343.14, 29,443.23 and 13,382.46

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Solution

The fourth proportional to 21,343.14, 29,443.23 and 13,382.46 is: 18,461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.14 : 29,443.23 = 13,382.46 : x
  2. Step 2: Convert to fraction form
    21,343.14/29,443.23 = 13,382.46/x
  3. Step 3: Cross multiply
    21,343.14x = 29,443.23 × 13,382.46
  4. Step 4: Simplify right side
    21,343.14x = 394,022,847.75
  5. Step 5: Solve for x
    x = 394,022,847.75/21,343.14
  6. Step 6: Final answer
    x = 18,461.33

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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.