Home / 21,235.57-31,674.19-18,440.26

Finding the Fourth Proportional to 21,235.57, 31,674.19 and 18,440.26

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Solution

The fourth proportional to 21,235.57, 31,674.19 and 18,440.26 is: 27,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.57 : 31,674.19 = 18,440.26 : x
  2. Step 2: Convert to fraction form
    21,235.57/31,674.19 = 18,440.26/x
  3. Step 3: Cross multiply
    21,235.57x = 31,674.19 × 18,440.26
  4. Step 4: Simplify right side
    21,235.57x = 584,080,208.18
  5. Step 5: Solve for x
    x = 584,080,208.18/21,235.57
  6. Step 6: Final answer
    x = 27,504.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.