Home / 21,145.14-29,152.62-18,192.68

Finding the Fourth Proportional to 21,145.14, 29,152.62 and 18,192.68

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Solution

The fourth proportional to 21,145.14, 29,152.62 and 18,192.68 is: 25,082.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.14 : 29,152.62 = 18,192.68 : x
  2. Step 2: Convert to fraction form
    21,145.14/29,152.62 = 18,192.68/x
  3. Step 3: Cross multiply
    21,145.14x = 29,152.62 × 18,192.68
  4. Step 4: Simplify right side
    21,145.14x = 530,364,286.82
  5. Step 5: Solve for x
    x = 530,364,286.82/21,145.14
  6. Step 6: Final answer
    x = 25,082.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.