Home / 12,735.03-19,121.29-7,123.70

Finding the Fourth Proportional to 12,735.03, 19,121.29 and 7,123.70

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Solution

The fourth proportional to 12,735.03, 19,121.29 and 7,123.70 is: 10,696.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,735.03 : 19,121.29 = 7,123.70 : x
  2. Step 2: Convert to fraction form
    12,735.03/19,121.29 = 7,123.70/x
  3. Step 3: Cross multiply
    12,735.03x = 19,121.29 × 7,123.70
  4. Step 4: Simplify right side
    12,735.03x = 136,214,276.05
  5. Step 5: Solve for x
    x = 136,214,276.05/12,735.03
  6. Step 6: Final answer
    x = 10,696.03

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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.