Home / 20,082.08-27,712.58-11,130.42

Finding the Fourth Proportional to 20,082.08, 27,712.58 and 11,130.42

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Solution

The fourth proportional to 20,082.08, 27,712.58 and 11,130.42 is: 15,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.08 : 27,712.58 = 11,130.42 : x
  2. Step 2: Convert to fraction form
    20,082.08/27,712.58 = 11,130.42/x
  3. Step 3: Cross multiply
    20,082.08x = 27,712.58 × 11,130.42
  4. Step 4: Simplify right side
    20,082.08x = 308,452,702.95
  5. Step 5: Solve for x
    x = 308,452,702.95/20,082.08
  6. Step 6: Final answer
    x = 15,359.60

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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.