Home / 19,972.32-27,558-13,682.40

Finding the Fourth Proportional to 19,972.32, 27,558 and 13,682.40

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Solution

The fourth proportional to 19,972.32, 27,558 and 13,682.40 is: 18,879.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.32 : 27,558 = 13,682.40 : x
  2. Step 2: Convert to fraction form
    19,972.32/27,558 = 13,682.40/x
  3. Step 3: Cross multiply
    19,972.32x = 27,558 × 13,682.40
  4. Step 4: Simplify right side
    19,972.32x = 377,059,579.20
  5. Step 5: Solve for x
    x = 377,059,579.20/19,972.32
  6. Step 6: Final answer
    x = 18,879.11

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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.