Home / 31,583.81-47,375.57-12,859.40

Finding the Fourth Proportional to 31,583.81, 47,375.57 and 12,859.40

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Solution

The fourth proportional to 31,583.81, 47,375.57 and 12,859.40 is: 19,289.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,583.81 : 47,375.57 = 12,859.40 : x
  2. Step 2: Convert to fraction form
    31,583.81/47,375.57 = 12,859.40/x
  3. Step 3: Cross multiply
    31,583.81x = 47,375.57 × 12,859.40
  4. Step 4: Simplify right side
    31,583.81x = 609,221,103.68
  5. Step 5: Solve for x
    x = 609,221,103.68/31,583.81
  6. Step 6: Final answer
    x = 19,289.03

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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.