Home / 21,082.32-29,092.68-12,697.20

Finding the Fourth Proportional to 21,082.32, 29,092.68 and 12,697.20

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Solution

The fourth proportional to 21,082.32, 29,092.68 and 12,697.20 is: 17,521.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.32 : 29,092.68 = 12,697.20 : x
  2. Step 2: Convert to fraction form
    21,082.32/29,092.68 = 12,697.20/x
  3. Step 3: Cross multiply
    21,082.32x = 29,092.68 × 12,697.20
  4. Step 4: Simplify right side
    21,082.32x = 369,395,576.50
  5. Step 5: Solve for x
    x = 369,395,576.50/21,082.32
  6. Step 6: Final answer
    x = 17,521.58

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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.