Home / 21,173.72-29,220.80-11,742.30

Finding the Fourth Proportional to 21,173.72, 29,220.80 and 11,742.30

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Solution

The fourth proportional to 21,173.72, 29,220.80 and 11,742.30 is: 16,204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.72 : 29,220.80 = 11,742.30 : x
  2. Step 2: Convert to fraction form
    21,173.72/29,220.80 = 11,742.30/x
  3. Step 3: Cross multiply
    21,173.72x = 29,220.80 × 11,742.30
  4. Step 4: Simplify right side
    21,173.72x = 343,119,341.13
  5. Step 5: Solve for x
    x = 343,119,341.13/21,173.72
  6. Step 6: Final answer
    x = 16,204.97

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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.