Home / 20,938.15-31,364.70-13,016.35

Finding the Fourth Proportional to 20,938.15, 31,364.70 and 13,016.35

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Solution

The fourth proportional to 20,938.15, 31,364.70 and 13,016.35 is: 19,498.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.15 : 31,364.70 = 13,016.35 : x
  2. Step 2: Convert to fraction form
    20,938.15/31,364.70 = 13,016.35/x
  3. Step 3: Cross multiply
    20,938.15x = 31,364.70 × 13,016.35
  4. Step 4: Simplify right side
    20,938.15x = 408,253,912.85
  5. Step 5: Solve for x
    x = 408,253,912.85/20,938.15
  6. Step 6: Final answer
    x = 19,498.09

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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.