Home / 19,456.28-29,137.64-11,111.00

Finding the Fourth Proportional to 19,456.28, 29,137.64 and 11,111.00

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Solution

The fourth proportional to 19,456.28, 29,137.64 and 11,111.00 is: 16,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,456.28 : 29,137.64 = 11,111.00 : x
  2. Step 2: Convert to fraction form
    19,456.28/29,137.64 = 11,111.00/x
  3. Step 3: Cross multiply
    19,456.28x = 29,137.64 × 11,111.00
  4. Step 4: Simplify right side
    19,456.28x = 323,748,116.80
  5. Step 5: Solve for x
    x = 323,748,116.80/19,456.28
  6. Step 6: Final answer
    x = 16,639.78

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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.