Home / 14,055.36-21,082.28-7,129.68

Finding the Fourth Proportional to 14,055.36, 21,082.28 and 7,129.68

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Solution

The fourth proportional to 14,055.36, 21,082.28 and 7,129.68 is: 10,694.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,055.36 : 21,082.28 = 7,129.68 : x
  2. Step 2: Convert to fraction form
    14,055.36/21,082.28 = 7,129.68/x
  3. Step 3: Cross multiply
    14,055.36x = 21,082.28 × 7,129.68
  4. Step 4: Simplify right side
    14,055.36x = 150,309,910.07
  5. Step 5: Solve for x
    x = 150,309,910.07/14,055.36
  6. Step 6: Final answer
    x = 10,694.13

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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.