Home / 31,931.28-47,914.56-12,212.64

Finding the Fourth Proportional to 31,931.28, 47,914.56 and 12,212.64

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Solution

The fourth proportional to 31,931.28, 47,914.56 and 12,212.64 is: 18,325.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.28 : 47,914.56 = 12,212.64 : x
  2. Step 2: Convert to fraction form
    31,931.28/47,914.56 = 12,212.64/x
  3. Step 3: Cross multiply
    31,931.28x = 47,914.56 × 12,212.64
  4. Step 4: Simplify right side
    31,931.28x = 585,163,272.04
  5. Step 5: Solve for x
    x = 585,163,272.04/31,931.28
  6. Step 6: Final answer
    x = 18,325.71

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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.