Home / 21,698.76-29,944.40-12,629.49

Finding the Fourth Proportional to 21,698.76, 29,944.40 and 12,629.49

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Solution

The fourth proportional to 21,698.76, 29,944.40 and 12,629.49 is: 17,428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,698.76 : 29,944.40 = 12,629.49 : x
  2. Step 2: Convert to fraction form
    21,698.76/29,944.40 = 12,629.49/x
  3. Step 3: Cross multiply
    21,698.76x = 29,944.40 × 12,629.49
  4. Step 4: Simplify right side
    21,698.76x = 378,182,500.36
  5. Step 5: Solve for x
    x = 378,182,500.36/21,698.76
  6. Step 6: Final answer
    x = 17,428.76

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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.