Home / 31,476.20-47,230.72-12,770.06

Finding the Fourth Proportional to 31,476.20, 47,230.72 and 12,770.06

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Solution

The fourth proportional to 31,476.20, 47,230.72 and 12,770.06 is: 19,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,476.20 : 47,230.72 = 12,770.06 : x
  2. Step 2: Convert to fraction form
    31,476.20/47,230.72 = 12,770.06/x
  3. Step 3: Cross multiply
    31,476.20x = 47,230.72 × 12,770.06
  4. Step 4: Simplify right side
    31,476.20x = 603,139,128.24
  5. Step 5: Solve for x
    x = 603,139,128.24/31,476.20
  6. Step 6: Final answer
    x = 19,161.75

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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.