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Finding the Fourth Proportional to 20,692.18, 31,043.13 and 5,901.31

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Solution

The fourth proportional to 20,692.18, 31,043.13 and 5,901.31 is: 8,853.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.18 : 31,043.13 = 5,901.31 : x
  2. Step 2: Convert to fraction form
    20,692.18/31,043.13 = 5,901.31/x
  3. Step 3: Cross multiply
    20,692.18x = 31,043.13 × 5,901.31
  4. Step 4: Simplify right side
    20,692.18x = 183,195,133.50
  5. Step 5: Solve for x
    x = 183,195,133.50/20,692.18
  6. Step 6: Final answer
    x = 8,853.35

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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.