Home / 21,070.28-29,082.30-13,896.92

Finding the Fourth Proportional to 21,070.28, 29,082.30 and 13,896.92

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Solution

The fourth proportional to 21,070.28, 29,082.30 and 13,896.92 is: 19,181.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.28 : 29,082.30 = 13,896.92 : x
  2. Step 2: Convert to fraction form
    21,070.28/29,082.30 = 13,896.92/x
  3. Step 3: Cross multiply
    21,070.28x = 29,082.30 × 13,896.92
  4. Step 4: Simplify right side
    21,070.28x = 404,154,396.52
  5. Step 5: Solve for x
    x = 404,154,396.52/21,070.28
  6. Step 6: Final answer
    x = 19,181.25

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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.