Home / 21,109.53-31,654.98-11,246.70

Finding the Fourth Proportional to 21,109.53, 31,654.98 and 11,246.70

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Solution

The fourth proportional to 21,109.53, 31,654.98 and 11,246.70 is: 16,865.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109.53 : 31,654.98 = 11,246.70 : x
  2. Step 2: Convert to fraction form
    21,109.53/31,654.98 = 11,246.70/x
  3. Step 3: Cross multiply
    21,109.53x = 31,654.98 × 11,246.70
  4. Step 4: Simplify right side
    21,109.53x = 356,014,063.57
  5. Step 5: Solve for x
    x = 356,014,063.57/21,109.53
  6. Step 6: Final answer
    x = 16,865.09

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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.