Home / 20,711.45-31,036.46-15,212.57

Finding the Fourth Proportional to 20,711.45, 31,036.46 and 15,212.57

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Solution

The fourth proportional to 20,711.45, 31,036.46 and 15,212.57 is: 22,796.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.45 : 31,036.46 = 15,212.57 : x
  2. Step 2: Convert to fraction form
    20,711.45/31,036.46 = 15,212.57/x
  3. Step 3: Cross multiply
    20,711.45x = 31,036.46 × 15,212.57
  4. Step 4: Simplify right side
    20,711.45x = 472,144,244.24
  5. Step 5: Solve for x
    x = 472,144,244.24/20,711.45
  6. Step 6: Final answer
    x = 22,796.29

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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.