Home / 21,185.22-29,235.51-11,753.76

Finding the Fourth Proportional to 21,185.22, 29,235.51 and 11,753.76

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Solution

The fourth proportional to 21,185.22, 29,235.51 and 11,753.76 is: 16,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.22 : 29,235.51 = 11,753.76 : x
  2. Step 2: Convert to fraction form
    21,185.22/29,235.51 = 11,753.76/x
  3. Step 3: Cross multiply
    21,185.22x = 29,235.51 × 11,753.76
  4. Step 4: Simplify right side
    21,185.22x = 343,627,168.02
  5. Step 5: Solve for x
    x = 343,627,168.02/21,185.22
  6. Step 6: Final answer
    x = 16,220.14

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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.