Home / 21,082.77-31,629.64-6,291.69

Finding the Fourth Proportional to 21,082.77, 31,629.64 and 6,291.69

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Solution

The fourth proportional to 21,082.77, 31,629.64 and 6,291.69 is: 9,439.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.77 : 31,629.64 = 6,291.69 : x
  2. Step 2: Convert to fraction form
    21,082.77/31,629.64 = 6,291.69/x
  3. Step 3: Cross multiply
    21,082.77x = 31,629.64 × 6,291.69
  4. Step 4: Simplify right side
    21,082.77x = 199,003,933.27
  5. Step 5: Solve for x
    x = 199,003,933.27/21,082.77
  6. Step 6: Final answer
    x = 9,439.17

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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.