Home / 21,270.50-29,353.30-11,839.68

Finding the Fourth Proportional to 21,270.50, 29,353.30 and 11,839.68

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Solution

The fourth proportional to 21,270.50, 29,353.30 and 11,839.68 is: 16,338.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.50 : 29,353.30 = 11,839.68 : x
  2. Step 2: Convert to fraction form
    21,270.50/29,353.30 = 11,839.68/x
  3. Step 3: Cross multiply
    21,270.50x = 29,353.30 × 11,839.68
  4. Step 4: Simplify right side
    21,270.50x = 347,533,678.94
  5. Step 5: Solve for x
    x = 347,533,678.94/21,270.50
  6. Step 6: Final answer
    x = 16,338.76

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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.