Home / 20,453.30-30,658.35-11,669.30

Finding the Fourth Proportional to 20,453.30, 30,658.35 and 11,669.30

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Solution

The fourth proportional to 20,453.30, 30,658.35 and 11,669.30 is: 17,491.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.30 : 30,658.35 = 11,669.30 : x
  2. Step 2: Convert to fraction form
    20,453.30/30,658.35 = 11,669.30/x
  3. Step 3: Cross multiply
    20,453.30x = 30,658.35 × 11,669.30
  4. Step 4: Simplify right side
    20,453.30x = 357,761,483.66
  5. Step 5: Solve for x
    x = 357,761,483.66/20,453.30
  6. Step 6: Final answer
    x = 17,491.63

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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.