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Finding the Fourth Proportional to 21,551.76, 29,734.50 and 13,051.17

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Solution

The fourth proportional to 21,551.76, 29,734.50 and 13,051.17 is: 18,006.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.76 : 29,734.50 = 13,051.17 : x
  2. Step 2: Convert to fraction form
    21,551.76/29,734.50 = 13,051.17/x
  3. Step 3: Cross multiply
    21,551.76x = 29,734.50 × 13,051.17
  4. Step 4: Simplify right side
    21,551.76x = 388,070,014.37
  5. Step 5: Solve for x
    x = 388,070,014.37/21,551.76
  6. Step 6: Final answer
    x = 18,006.42

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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.