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Finding the Fourth Proportional to 13,950.14, 20,924.93 and 4,089.20

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Solution

The fourth proportional to 13,950.14, 20,924.93 and 4,089.20 is: 6,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,950.14 : 20,924.93 = 4,089.20 : x
  2. Step 2: Convert to fraction form
    13,950.14/20,924.93 = 4,089.20/x
  3. Step 3: Cross multiply
    13,950.14x = 20,924.93 × 4,089.20
  4. Step 4: Simplify right side
    13,950.14x = 85,566,129.35
  5. Step 5: Solve for x
    x = 85,566,129.35/13,950.14
  6. Step 6: Final answer
    x = 6,133.71

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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.