Home / 21,186.72-29,220.12-16,099.08

Finding the Fourth Proportional to 21,186.72, 29,220.12 and 16,099.08

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Solution

The fourth proportional to 21,186.72, 29,220.12 and 16,099.08 is: 22,203.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.72 : 29,220.12 = 16,099.08 : x
  2. Step 2: Convert to fraction form
    21,186.72/29,220.12 = 16,099.08/x
  3. Step 3: Cross multiply
    21,186.72x = 29,220.12 × 16,099.08
  4. Step 4: Simplify right side
    21,186.72x = 470,417,049.49
  5. Step 5: Solve for x
    x = 470,417,049.49/21,186.72
  6. Step 6: Final answer
    x = 22,203.39

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Half scale
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Double scale
Find fourth proportional to 21,187.72, 29,221.50 and 16,100.08
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.