Home / 21,135.73-31,708.86-6,344.92

Finding the Fourth Proportional to 21,135.73, 31,708.86 and 6,344.92

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Solution

The fourth proportional to 21,135.73, 31,708.86 and 6,344.92 is: 9,518.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.73 : 31,708.86 = 6,344.92 : x
  2. Step 2: Convert to fraction form
    21,135.73/31,708.86 = 6,344.92/x
  3. Step 3: Cross multiply
    21,135.73x = 31,708.86 × 6,344.92
  4. Step 4: Simplify right side
    21,135.73x = 201,190,179.99
  5. Step 5: Solve for x
    x = 201,190,179.99/21,135.73
  6. Step 6: Final answer
    x = 9,518.96

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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.