Home / 31,928.21-47,903.24-12,212.40

Finding the Fourth Proportional to 31,928.21, 47,903.24 and 12,212.40

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Solution

The fourth proportional to 31,928.21, 47,903.24 and 12,212.40 is: 18,322.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,928.21 : 47,903.24 = 12,212.40 : x
  2. Step 2: Convert to fraction form
    31,928.21/47,903.24 = 12,212.40/x
  3. Step 3: Cross multiply
    31,928.21x = 47,903.24 × 12,212.40
  4. Step 4: Simplify right side
    31,928.21x = 585,013,528.18
  5. Step 5: Solve for x
    x = 585,013,528.18/31,928.21
  6. Step 6: Final answer
    x = 18,322.78

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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.