Home / 21,157.05-29,195.96-12,204.93

Finding the Fourth Proportional to 21,157.05, 29,195.96 and 12,204.93

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Solution

The fourth proportional to 21,157.05, 29,195.96 and 12,204.93 is: 16,842.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.05 : 29,195.96 = 12,204.93 : x
  2. Step 2: Convert to fraction form
    21,157.05/29,195.96 = 12,204.93/x
  3. Step 3: Cross multiply
    21,157.05x = 29,195.96 × 12,204.93
  4. Step 4: Simplify right side
    21,157.05x = 356,334,587.06
  5. Step 5: Solve for x
    x = 356,334,587.06/21,157.05
  6. Step 6: Final answer
    x = 16,842.36

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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.