Home / 21,429.08-29,575.23-11,998.25

Finding the Fourth Proportional to 21,429.08, 29,575.23 and 11,998.25

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Solution

The fourth proportional to 21,429.08, 29,575.23 and 11,998.25 is: 16,559.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.08 : 29,575.23 = 11,998.25 : x
  2. Step 2: Convert to fraction form
    21,429.08/29,575.23 = 11,998.25/x
  3. Step 3: Cross multiply
    21,429.08x = 29,575.23 × 11,998.25
  4. Step 4: Simplify right side
    21,429.08x = 354,851,003.35
  5. Step 5: Solve for x
    x = 354,851,003.35/21,429.08
  6. Step 6: Final answer
    x = 16,559.32

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Half scale
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Double scale
Find fourth proportional to 21,430.08, 29,576.61 and 11,999.25
Similar ratio
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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.