Home / 21,238.75-29,266.25-16,429.48

Finding the Fourth Proportional to 21,238.75, 29,266.25 and 16,429.48

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Solution

The fourth proportional to 21,238.75, 29,266.25 and 16,429.48 is: 22,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.75 : 29,266.25 = 16,429.48 : x
  2. Step 2: Convert to fraction form
    21,238.75/29,266.25 = 16,429.48/x
  3. Step 3: Cross multiply
    21,238.75x = 29,266.25 × 16,429.48
  4. Step 4: Simplify right side
    21,238.75x = 480,829,122.72
  5. Step 5: Solve for x
    x = 480,829,122.72/21,238.75
  6. Step 6: Final answer
    x = 22,639.24

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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.