Home / 31,351.05-47,028.09-12,628.56

Finding the Fourth Proportional to 31,351.05, 47,028.09 and 12,628.56

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Solution

The fourth proportional to 31,351.05, 47,028.09 and 12,628.56 is: 18,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,351.05 : 47,028.09 = 12,628.56 : x
  2. Step 2: Convert to fraction form
    31,351.05/47,028.09 = 12,628.56/x
  3. Step 3: Cross multiply
    31,351.05x = 47,028.09 × 12,628.56
  4. Step 4: Simplify right side
    31,351.05x = 593,897,015.43
  5. Step 5: Solve for x
    x = 593,897,015.43/31,351.05
  6. Step 6: Final answer
    x = 18,943.45

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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.