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Finding the Fourth Proportional to 13,179.70, 19,763.15 and 7,330.10

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Solution

The fourth proportional to 13,179.70, 19,763.15 and 7,330.10 is: 10,991.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.70 : 19,763.15 = 7,330.10 : x
  2. Step 2: Convert to fraction form
    13,179.70/19,763.15 = 7,330.10/x
  3. Step 3: Cross multiply
    13,179.70x = 19,763.15 × 7,330.10
  4. Step 4: Simplify right side
    13,179.70x = 144,865,865.82
  5. Step 5: Solve for x
    x = 144,865,865.82/13,179.70
  6. Step 6: Final answer
    x = 10,991.59

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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.