Home / 21,099.96-29,033.15-20,372.76

Finding the Fourth Proportional to 21,099.96, 29,033.15 and 20,372.76

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Solution

The fourth proportional to 21,099.96, 29,033.15 and 20,372.76 is: 28,032.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.96 : 29,033.15 = 20,372.76 : x
  2. Step 2: Convert to fraction form
    21,099.96/29,033.15 = 20,372.76/x
  3. Step 3: Cross multiply
    21,099.96x = 29,033.15 × 20,372.76
  4. Step 4: Simplify right side
    21,099.96x = 591,485,295.13
  5. Step 5: Solve for x
    x = 591,485,295.13/21,099.96
  6. Step 6: Final answer
    x = 28,032.53

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Half scale
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Double scale
Find fourth proportional to 21,100.96, 29,034.52 and 20,373.76
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.