Home / 21,680.22-29,923.65-13,733.31

Finding the Fourth Proportional to 21,680.22, 29,923.65 and 13,733.31

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Solution

The fourth proportional to 21,680.22, 29,923.65 and 13,733.31 is: 18,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.22 : 29,923.65 = 13,733.31 : x
  2. Step 2: Convert to fraction form
    21,680.22/29,923.65 = 13,733.31/x
  3. Step 3: Cross multiply
    21,680.22x = 29,923.65 × 13,733.31
  4. Step 4: Simplify right side
    21,680.22x = 410,950,761.78
  5. Step 5: Solve for x
    x = 410,950,761.78/21,680.22
  6. Step 6: Final answer
    x = 18,955.10

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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.