Home / 20,207.40-30,278.70-13,273.80

Finding the Fourth Proportional to 20,207.40, 30,278.70 and 13,273.80

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Solution

The fourth proportional to 20,207.40, 30,278.70 and 13,273.80 is: 19,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.40 : 30,278.70 = 13,273.80 : x
  2. Step 2: Convert to fraction form
    20,207.40/30,278.70 = 13,273.80/x
  3. Step 3: Cross multiply
    20,207.40x = 30,278.70 × 13,273.80
  4. Step 4: Simplify right side
    20,207.40x = 401,913,408.06
  5. Step 5: Solve for x
    x = 401,913,408.06/20,207.40
  6. Step 6: Final answer
    x = 19,889.42

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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.