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Finding the Fourth Proportional to 15,425.60, 23,142.04 and 6,660.60

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Solution

The fourth proportional to 15,425.60, 23,142.04 and 6,660.60 is: 9,992.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.60 : 23,142.04 = 6,660.60 : x
  2. Step 2: Convert to fraction form
    15,425.60/23,142.04 = 6,660.60/x
  3. Step 3: Cross multiply
    15,425.60x = 23,142.04 × 6,660.60
  4. Step 4: Simplify right side
    15,425.60x = 154,139,871.62
  5. Step 5: Solve for x
    x = 154,139,871.62/15,425.60
  6. Step 6: Final answer
    x = 9,992.47

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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.