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Finding the Fourth Proportional to 22,375.84, 30,840.64 and 15,289.92

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Solution

The fourth proportional to 22,375.84, 30,840.64 and 15,289.92 is: 21,074.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,375.84 : 30,840.64 = 15,289.92 : x
  2. Step 2: Convert to fraction form
    22,375.84/30,840.64 = 15,289.92/x
  3. Step 3: Cross multiply
    22,375.84x = 30,840.64 × 15,289.92
  4. Step 4: Simplify right side
    22,375.84x = 471,550,918.35
  5. Step 5: Solve for x
    x = 471,550,918.35/22,375.84
  6. Step 6: Final answer
    x = 21,074.11

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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.