Home / 31,664.39-47,509.67-13,885.85

Finding the Fourth Proportional to 31,664.39, 47,509.67 and 13,885.85

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Solution

The fourth proportional to 31,664.39, 47,509.67 and 13,885.85 is: 20,834.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,664.39 : 47,509.67 = 13,885.85 : x
  2. Step 2: Convert to fraction form
    31,664.39/47,509.67 = 13,885.85/x
  3. Step 3: Cross multiply
    31,664.39x = 47,509.67 × 13,885.85
  4. Step 4: Simplify right side
    31,664.39x = 659,712,133.81
  5. Step 5: Solve for x
    x = 659,712,133.81/31,664.39
  6. Step 6: Final answer
    x = 20,834.51

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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.