Home / 21,828.56-30,122.60-13,344.88

Finding the Fourth Proportional to 21,828.56, 30,122.60 and 13,344.88

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Solution

The fourth proportional to 21,828.56, 30,122.60 and 13,344.88 is: 18,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.56 : 30,122.60 = 13,344.88 : x
  2. Step 2: Convert to fraction form
    21,828.56/30,122.60 = 13,344.88/x
  3. Step 3: Cross multiply
    21,828.56x = 30,122.60 × 13,344.88
  4. Step 4: Simplify right side
    21,828.56x = 401,982,482.29
  5. Step 5: Solve for x
    x = 401,982,482.29/21,828.56
  6. Step 6: Final answer
    x = 18,415.44

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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.