Home / 20,711.58-31,036.64-15,212.70

Finding the Fourth Proportional to 20,711.58, 31,036.64 and 15,212.70

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Solution

The fourth proportional to 20,711.58, 31,036.64 and 15,212.70 is: 22,796.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.58 : 31,036.64 = 15,212.70 : x
  2. Step 2: Convert to fraction form
    20,711.58/31,036.64 = 15,212.70/x
  3. Step 3: Cross multiply
    20,711.58x = 31,036.64 × 15,212.70
  4. Step 4: Simplify right side
    20,711.58x = 472,151,093.33
  5. Step 5: Solve for x
    x = 472,151,093.33/20,711.58
  6. Step 6: Final answer
    x = 22,796.48

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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.