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Finding the Fourth Proportional to 12,365.70, 18,523.35 and 7,671.30

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Solution

The fourth proportional to 12,365.70, 18,523.35 and 7,671.30 is: 11,491.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.70 : 18,523.35 = 7,671.30 : x
  2. Step 2: Convert to fraction form
    12,365.70/18,523.35 = 7,671.30/x
  3. Step 3: Cross multiply
    12,365.70x = 18,523.35 × 7,671.30
  4. Step 4: Simplify right side
    12,365.70x = 142,098,174.86
  5. Step 5: Solve for x
    x = 142,098,174.86/12,365.70
  6. Step 6: Final answer
    x = 11,491.32

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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.