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Finding the Fourth Proportional to 15,425.40, 23,131.26 and 7,103.40

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Solution

The fourth proportional to 15,425.40, 23,131.26 and 7,103.40 is: 10,651.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.40 : 23,131.26 = 7,103.40 : x
  2. Step 2: Convert to fraction form
    15,425.40/23,131.26 = 7,103.40/x
  3. Step 3: Cross multiply
    15,425.40x = 23,131.26 × 7,103.40
  4. Step 4: Simplify right side
    15,425.40x = 164,310,592.28
  5. Step 5: Solve for x
    x = 164,310,592.28/15,425.40
  6. Step 6: Final answer
    x = 10,651.95

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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.