Home / 21,023.40-29,012.34-11,591.88

Finding the Fourth Proportional to 21,023.40, 29,012.34 and 11,591.88

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Solution

The fourth proportional to 21,023.40, 29,012.34 and 11,591.88 is: 15,996.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.40 : 29,012.34 = 11,591.88 : x
  2. Step 2: Convert to fraction form
    21,023.40/29,012.34 = 11,591.88/x
  3. Step 3: Cross multiply
    21,023.40x = 29,012.34 × 11,591.88
  4. Step 4: Simplify right side
    21,023.40x = 336,307,563.80
  5. Step 5: Solve for x
    x = 336,307,563.80/21,023.40
  6. Step 6: Final answer
    x = 15,996.82

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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.