Home / 21,137.80-31,706.70-6,346.84

Finding the Fourth Proportional to 21,137.80, 31,706.70 and 6,346.84

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Solution

The fourth proportional to 21,137.80, 31,706.70 and 6,346.84 is: 9,520.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.80 : 31,706.70 = 6,346.84 : x
  2. Step 2: Convert to fraction form
    21,137.80/31,706.70 = 6,346.84/x
  3. Step 3: Cross multiply
    21,137.80x = 31,706.70 × 6,346.84
  4. Step 4: Simplify right side
    21,137.80x = 201,237,351.83
  5. Step 5: Solve for x
    x = 201,237,351.83/21,137.80
  6. Step 6: Final answer
    x = 9,520.26

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1.5x scale

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.