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Finding the Fourth Proportional to 21,552, 29,742.18 and 13,054.44

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Solution

The fourth proportional to 21,552, 29,742.18 and 13,054.44 is: 18,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,552 : 29,742.18 = 13,054.44 : x
  2. Step 2: Convert to fraction form
    21,552/29,742.18 = 13,054.44/x
  3. Step 3: Cross multiply
    21,552x = 29,742.18 × 13,054.44
  4. Step 4: Simplify right side
    21,552x = 388,267,504.28
  5. Step 5: Solve for x
    x = 388,267,504.28/21,552
  6. Step 6: Final answer
    x = 18,015.38

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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.