Home / 19,955.40-29,998.72-18,511.98

Finding the Fourth Proportional to 19,955.40, 29,998.72 and 18,511.98

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Solution

The fourth proportional to 19,955.40, 29,998.72 and 18,511.98 is: 27,828.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,955.40 : 29,998.72 = 18,511.98 : x
  2. Step 2: Convert to fraction form
    19,955.40/29,998.72 = 18,511.98/x
  3. Step 3: Cross multiply
    19,955.40x = 29,998.72 × 18,511.98
  4. Step 4: Simplify right side
    19,955.40x = 555,335,704.67
  5. Step 5: Solve for x
    x = 555,335,704.67/19,955.40
  6. Step 6: Final answer
    x = 27,828.84

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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.