Home / 21,660.98-29,896.89-13,713.80

Finding the Fourth Proportional to 21,660.98, 29,896.89 and 13,713.80

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Solution

The fourth proportional to 21,660.98, 29,896.89 and 13,713.80 is: 18,928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.98 : 29,896.89 = 13,713.80 : x
  2. Step 2: Convert to fraction form
    21,660.98/29,896.89 = 13,713.80/x
  3. Step 3: Cross multiply
    21,660.98x = 29,896.89 × 13,713.80
  4. Step 4: Simplify right side
    21,660.98x = 409,999,970.08
  5. Step 5: Solve for x
    x = 409,999,970.08/21,660.98
  6. Step 6: Final answer
    x = 18,928.04

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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.