Home / 21,204.30-31,806.45-10,836.30

Finding the Fourth Proportional to 21,204.30, 31,806.45 and 10,836.30

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Solution

The fourth proportional to 21,204.30, 31,806.45 and 10,836.30 is: 16,254.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.30 : 31,806.45 = 10,836.30 : x
  2. Step 2: Convert to fraction form
    21,204.30/31,806.45 = 10,836.30/x
  3. Step 3: Cross multiply
    21,204.30x = 31,806.45 × 10,836.30
  4. Step 4: Simplify right side
    21,204.30x = 344,664,234.14
  5. Step 5: Solve for x
    x = 344,664,234.14/21,204.30
  6. Step 6: Final answer
    x = 16,254.45

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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.