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Finding the Fourth Proportional to 12,432.70, 18,649.03 and 3,673.76

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Solution

The fourth proportional to 12,432.70, 18,649.03 and 3,673.76 is: 5,510.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.70 : 18,649.03 = 3,673.76 : x
  2. Step 2: Convert to fraction form
    12,432.70/18,649.03 = 3,673.76/x
  3. Step 3: Cross multiply
    12,432.70x = 18,649.03 × 3,673.76
  4. Step 4: Simplify right side
    12,432.70x = 68,512,060.45
  5. Step 5: Solve for x
    x = 68,512,060.45/12,432.70
  6. Step 6: Final answer
    x = 5,510.63

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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.