Home / 21,180.52-29,228.91-11,748.88

Finding the Fourth Proportional to 21,180.52, 29,228.91 and 11,748.88

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Solution

The fourth proportional to 21,180.52, 29,228.91 and 11,748.88 is: 16,213.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.52 : 29,228.91 = 11,748.88 : x
  2. Step 2: Convert to fraction form
    21,180.52/29,228.91 = 11,748.88/x
  3. Step 3: Cross multiply
    21,180.52x = 29,228.91 × 11,748.88
  4. Step 4: Simplify right side
    21,180.52x = 343,406,956.12
  5. Step 5: Solve for x
    x = 343,406,956.12/21,180.52
  6. Step 6: Final answer
    x = 16,213.34

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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.