Home / 21,901.37-30,226.26-13,409.21

Finding the Fourth Proportional to 21,901.37, 30,226.26 and 13,409.21

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Solution

The fourth proportional to 21,901.37, 30,226.26 and 13,409.21 is: 18,506.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.37 : 30,226.26 = 13,409.21 : x
  2. Step 2: Convert to fraction form
    21,901.37/30,226.26 = 13,409.21/x
  3. Step 3: Cross multiply
    21,901.37x = 30,226.26 × 13,409.21
  4. Step 4: Simplify right side
    21,901.37x = 405,310,116.72
  5. Step 5: Solve for x
    x = 405,310,116.72/21,901.37
  6. Step 6: Final answer
    x = 18,506.16

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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.