Home / 21,740.09-29,993.37-13,238.74

Finding the Fourth Proportional to 21,740.09, 29,993.37 and 13,238.74

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Solution

The fourth proportional to 21,740.09, 29,993.37 and 13,238.74 is: 18,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.09 : 29,993.37 = 13,238.74 : x
  2. Step 2: Convert to fraction form
    21,740.09/29,993.37 = 13,238.74/x
  3. Step 3: Cross multiply
    21,740.09x = 29,993.37 × 13,238.74
  4. Step 4: Simplify right side
    21,740.09x = 397,074,277.19
  5. Step 5: Solve for x
    x = 397,074,277.19/21,740.09
  6. Step 6: Final answer
    x = 18,264.61

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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.