Home / 21,259.77-29,338.62-11,699.40

Finding the Fourth Proportional to 21,259.77, 29,338.62 and 11,699.40

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Solution

The fourth proportional to 21,259.77, 29,338.62 and 11,699.40 is: 16,145.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.77 : 29,338.62 = 11,699.40 : x
  2. Step 2: Convert to fraction form
    21,259.77/29,338.62 = 11,699.40/x
  3. Step 3: Cross multiply
    21,259.77x = 29,338.62 × 11,699.40
  4. Step 4: Simplify right side
    21,259.77x = 343,244,104.13
  5. Step 5: Solve for x
    x = 343,244,104.13/21,259.77
  6. Step 6: Final answer
    x = 16,145.24

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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.