Home / 21,468.77-29,620.83-13,915.41

Finding the Fourth Proportional to 21,468.77, 29,620.83 and 13,915.41

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Solution

The fourth proportional to 21,468.77, 29,620.83 and 13,915.41 is: 19,199.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.77 : 29,620.83 = 13,915.41 : x
  2. Step 2: Convert to fraction form
    21,468.77/29,620.83 = 13,915.41/x
  3. Step 3: Cross multiply
    21,468.77x = 29,620.83 × 13,915.41
  4. Step 4: Simplify right side
    21,468.77x = 412,185,993.99
  5. Step 5: Solve for x
    x = 412,185,993.99/21,468.77
  6. Step 6: Final answer
    x = 19,199.33

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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.