Home / 21,510.35-29,682.88-11,949.51

Finding the Fourth Proportional to 21,510.35, 29,682.88 and 11,949.51

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Solution

The fourth proportional to 21,510.35, 29,682.88 and 11,949.51 is: 16,489.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.35 : 29,682.88 = 11,949.51 : x
  2. Step 2: Convert to fraction form
    21,510.35/29,682.88 = 11,949.51/x
  3. Step 3: Cross multiply
    21,510.35x = 29,682.88 × 11,949.51
  4. Step 4: Simplify right side
    21,510.35x = 354,695,871.39
  5. Step 5: Solve for x
    x = 354,695,871.39/21,510.35
  6. Step 6: Final answer
    x = 16,489.54

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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.