Home / 20,763.71-31,145.39-5,972.57

Finding the Fourth Proportional to 20,763.71, 31,145.39 and 5,972.57

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Solution

The fourth proportional to 20,763.71, 31,145.39 and 5,972.57 is: 8,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.71 : 31,145.39 = 5,972.57 : x
  2. Step 2: Convert to fraction form
    20,763.71/31,145.39 = 5,972.57/x
  3. Step 3: Cross multiply
    20,763.71x = 31,145.39 × 5,972.57
  4. Step 4: Simplify right side
    20,763.71x = 186,018,021.95
  5. Step 5: Solve for x
    x = 186,018,021.95/20,763.71
  6. Step 6: Final answer
    x = 8,958.80

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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.