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Finding the Fourth Proportional to 15,145.98, 22,720.04 and 4,758.54

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Solution

The fourth proportional to 15,145.98, 22,720.04 and 4,758.54 is: 7,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.98 : 22,720.04 = 4,758.54 : x
  2. Step 2: Convert to fraction form
    15,145.98/22,720.04 = 4,758.54/x
  3. Step 3: Cross multiply
    15,145.98x = 22,720.04 × 4,758.54
  4. Step 4: Simplify right side
    15,145.98x = 108,114,219.14
  5. Step 5: Solve for x
    x = 108,114,219.14/15,145.98
  6. Step 6: Final answer
    x = 7,138.15

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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.