Home / 21,310.70-29,407.12-11,750.57

Finding the Fourth Proportional to 21,310.70, 29,407.12 and 11,750.57

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Solution

The fourth proportional to 21,310.70, 29,407.12 and 11,750.57 is: 16,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.70 : 29,407.12 = 11,750.57 : x
  2. Step 2: Convert to fraction form
    21,310.70/29,407.12 = 11,750.57/x
  3. Step 3: Cross multiply
    21,310.70x = 29,407.12 × 11,750.57
  4. Step 4: Simplify right side
    21,310.70x = 345,550,245.65
  5. Step 5: Solve for x
    x = 345,550,245.65/21,310.70
  6. Step 6: Final answer
    x = 16,214.87

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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.