Home / 21,157.83-29,200.91-12,203.58

Finding the Fourth Proportional to 21,157.83, 29,200.91 and 12,203.58

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Solution

The fourth proportional to 21,157.83, 29,200.91 and 12,203.58 is: 16,842.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.83 : 29,200.91 = 12,203.58 : x
  2. Step 2: Convert to fraction form
    21,157.83/29,200.91 = 12,203.58/x
  3. Step 3: Cross multiply
    21,157.83x = 29,200.91 × 12,203.58
  4. Step 4: Simplify right side
    21,157.83x = 356,355,610.75
  5. Step 5: Solve for x
    x = 356,355,610.75/21,157.83
  6. Step 6: Final answer
    x = 16,842.73

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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.