Home / 19,786.84-29,687.29-6,639.20

Finding the Fourth Proportional to 19,786.84, 29,687.29 and 6,639.20

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Solution

The fourth proportional to 19,786.84, 29,687.29 and 6,639.20 is: 9,961.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.84 : 29,687.29 = 6,639.20 : x
  2. Step 2: Convert to fraction form
    19,786.84/29,687.29 = 6,639.20/x
  3. Step 3: Cross multiply
    19,786.84x = 29,687.29 × 6,639.20
  4. Step 4: Simplify right side
    19,786.84x = 197,099,855.77
  5. Step 5: Solve for x
    x = 197,099,855.77/19,786.84
  6. Step 6: Final answer
    x = 9,961.16

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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.