Home / 21,749.87-30,014.31-12,797.95

Finding the Fourth Proportional to 21,749.87, 30,014.31 and 12,797.95

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Solution

The fourth proportional to 21,749.87, 30,014.31 and 12,797.95 is: 17,660.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.87 : 30,014.31 = 12,797.95 : x
  2. Step 2: Convert to fraction form
    21,749.87/30,014.31 = 12,797.95/x
  3. Step 3: Cross multiply
    21,749.87x = 30,014.31 × 12,797.95
  4. Step 4: Simplify right side
    21,749.87x = 384,121,638.66
  5. Step 5: Solve for x
    x = 384,121,638.66/21,749.87
  6. Step 6: Final answer
    x = 17,660.87

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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.