Home / 13,826.84-20,761.02-7,910.40

Finding the Fourth Proportional to 13,826.84, 20,761.02 and 7,910.40

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Solution

The fourth proportional to 13,826.84, 20,761.02 and 7,910.40 is: 11,877.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.84 : 20,761.02 = 7,910.40 : x
  2. Step 2: Convert to fraction form
    13,826.84/20,761.02 = 7,910.40/x
  3. Step 3: Cross multiply
    13,826.84x = 20,761.02 × 7,910.40
  4. Step 4: Simplify right side
    13,826.84x = 164,227,972.61
  5. Step 5: Solve for x
    x = 164,227,972.61/13,826.84
  6. Step 6: Final answer
    x = 11,877.48

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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.