Home / 21,317.80-29,396.77-14,145.21

Finding the Fourth Proportional to 21,317.80, 29,396.77 and 14,145.21

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Solution

The fourth proportional to 21,317.80, 29,396.77 and 14,145.21 is: 19,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.80 : 29,396.77 = 14,145.21 : x
  2. Step 2: Convert to fraction form
    21,317.80/29,396.77 = 14,145.21/x
  3. Step 3: Cross multiply
    21,317.80x = 29,396.77 × 14,145.21
  4. Step 4: Simplify right side
    21,317.80x = 415,823,484.97
  5. Step 5: Solve for x
    x = 415,823,484.97/21,317.80
  6. Step 6: Final answer
    x = 19,505.93

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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.