Home / 31,622.90-47,434.35-11,905.88

Finding the Fourth Proportional to 31,622.90, 47,434.35 and 11,905.88

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Solution

The fourth proportional to 31,622.90, 47,434.35 and 11,905.88 is: 17,858.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,622.90 : 47,434.35 = 11,905.88 : x
  2. Step 2: Convert to fraction form
    31,622.90/47,434.35 = 11,905.88/x
  3. Step 3: Cross multiply
    31,622.90x = 47,434.35 × 11,905.88
  4. Step 4: Simplify right side
    31,622.90x = 564,747,678.98
  5. Step 5: Solve for x
    x = 564,747,678.98/31,622.90
  6. Step 6: Final answer
    x = 17,858.82

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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.