Home / 19,786.64-29,681.52-6,639

Finding the Fourth Proportional to 19,786.64, 29,681.52 and 6,639

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Solution

The fourth proportional to 19,786.64, 29,681.52 and 6,639 is: 9,959.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.64 : 29,681.52 = 6,639 : x
  2. Step 2: Convert to fraction form
    19,786.64/29,681.52 = 6,639/x
  3. Step 3: Cross multiply
    19,786.64x = 29,681.52 × 6,639
  4. Step 4: Simplify right side
    19,786.64x = 197,055,611.28
  5. Step 5: Solve for x
    x = 197,055,611.28/19,786.64
  6. Step 6: Final answer
    x = 9,959.02

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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.