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Finding the Fourth Proportional to 18,810.14, 28,193.22 and 13,833.63

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Solution

The fourth proportional to 18,810.14, 28,193.22 and 13,833.63 is: 20,734.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.14 : 28,193.22 = 13,833.63 : x
  2. Step 2: Convert to fraction form
    18,810.14/28,193.22 = 13,833.63/x
  3. Step 3: Cross multiply
    18,810.14x = 28,193.22 × 13,833.63
  4. Step 4: Simplify right side
    18,810.14x = 390,014,573.99
  5. Step 5: Solve for x
    x = 390,014,573.99/18,810.14
  6. Step 6: Final answer
    x = 20,734.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.