Home / 19,720.32-29,579.28-11,927.04

Finding the Fourth Proportional to 19,720.32, 29,579.28 and 11,927.04

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Solution

The fourth proportional to 19,720.32, 29,579.28 and 11,927.04 is: 17,889.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.32 : 29,579.28 = 11,927.04 : x
  2. Step 2: Convert to fraction form
    19,720.32/29,579.28 = 11,927.04/x
  3. Step 3: Cross multiply
    19,720.32x = 29,579.28 × 11,927.04
  4. Step 4: Simplify right side
    19,720.32x = 352,793,255.73
  5. Step 5: Solve for x
    x = 352,793,255.73/19,720.32
  6. Step 6: Final answer
    x = 17,889.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.