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Finding the Fourth Proportional to 15,591.42, 23,394.95 and 7,272.09

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Solution

The fourth proportional to 15,591.42, 23,394.95 and 7,272.09 is: 10,911.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.42 : 23,394.95 = 7,272.09 : x
  2. Step 2: Convert to fraction form
    15,591.42/23,394.95 = 7,272.09/x
  3. Step 3: Cross multiply
    15,591.42x = 23,394.95 × 7,272.09
  4. Step 4: Simplify right side
    15,591.42x = 170,130,172.86
  5. Step 5: Solve for x
    x = 170,130,172.86/15,591.42
  6. Step 6: Final answer
    x = 10,911.78

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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.