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Finding the Fourth Proportional to 15,028.84, 20,742.27 and 8,744.86

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Solution

The fourth proportional to 15,028.84, 20,742.27 and 8,744.86 is: 12,069.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.84 : 20,742.27 = 8,744.86 : x
  2. Step 2: Convert to fraction form
    15,028.84/20,742.27 = 8,744.86/x
  3. Step 3: Cross multiply
    15,028.84x = 20,742.27 × 8,744.86
  4. Step 4: Simplify right side
    15,028.84x = 181,388,247.23
  5. Step 5: Solve for x
    x = 181,388,247.23/15,028.84
  6. Step 6: Final answer
    x = 12,069.34

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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.