Home / 13,207.70-18,228.30-7,905.44

Finding the Fourth Proportional to 13,207.70, 18,228.30 and 7,905.44

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Solution

The fourth proportional to 13,207.70, 18,228.30 and 7,905.44 is: 10,910.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.70 : 18,228.30 = 7,905.44 : x
  2. Step 2: Convert to fraction form
    13,207.70/18,228.30 = 7,905.44/x
  3. Step 3: Cross multiply
    13,207.70x = 18,228.30 × 7,905.44
  4. Step 4: Simplify right side
    13,207.70x = 144,102,731.95
  5. Step 5: Solve for x
    x = 144,102,731.95/13,207.70
  6. Step 6: Final answer
    x = 10,910.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.