Home / 21,428.30-32,163.18-10,342.79

Finding the Fourth Proportional to 21,428.30, 32,163.18 and 10,342.79

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Solution

The fourth proportional to 21,428.30, 32,163.18 and 10,342.79 is: 15,524.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.30 : 32,163.18 = 10,342.79 : x
  2. Step 2: Convert to fraction form
    21,428.30/32,163.18 = 10,342.79/x
  3. Step 3: Cross multiply
    21,428.30x = 32,163.18 × 10,342.79
  4. Step 4: Simplify right side
    21,428.30x = 332,657,096.88
  5. Step 5: Solve for x
    x = 332,657,096.88/21,428.30
  6. Step 6: Final answer
    x = 15,524.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.