Home / 14,105.70-21,146.40-7,180.20

Finding the Fourth Proportional to 14,105.70, 21,146.40 and 7,180.20

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Solution

The fourth proportional to 14,105.70, 21,146.40 and 7,180.20 is: 10,764.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,105.70 : 21,146.40 = 7,180.20 : x
  2. Step 2: Convert to fraction form
    14,105.70/21,146.40 = 7,180.20/x
  3. Step 3: Cross multiply
    14,105.70x = 21,146.40 × 7,180.20
  4. Step 4: Simplify right side
    14,105.70x = 151,835,381.28
  5. Step 5: Solve for x
    x = 151,835,381.28/14,105.70
  6. Step 6: Final answer
    x = 10,764.12

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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.