Home / 12,126.53-18,082.70-10,651.79

Finding the Fourth Proportional to 12,126.53, 18,082.70 and 10,651.79

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Solution

The fourth proportional to 12,126.53, 18,082.70 and 10,651.79 is: 15,883.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.53 : 18,082.70 = 10,651.79 : x
  2. Step 2: Convert to fraction form
    12,126.53/18,082.70 = 10,651.79/x
  3. Step 3: Cross multiply
    12,126.53x = 18,082.70 × 10,651.79
  4. Step 4: Simplify right side
    12,126.53x = 192,613,123.03
  5. Step 5: Solve for x
    x = 192,613,123.03/12,126.53
  6. Step 6: Final answer
    x = 15,883.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.