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Finding the Fourth Proportional to 34,671.15, 51,975.05 and 12,479.45

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Solution

The fourth proportional to 34,671.15, 51,975.05 and 12,479.45 is: 18,707.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,671.15 : 51,975.05 = 12,479.45 : x
  2. Step 2: Convert to fraction form
    34,671.15/51,975.05 = 12,479.45/x
  3. Step 3: Cross multiply
    34,671.15x = 51,975.05 × 12,479.45
  4. Step 4: Simplify right side
    34,671.15x = 648,619,715.45
  5. Step 5: Solve for x
    x = 648,619,715.45/34,671.15
  6. Step 6: Final answer
    x = 18,707.76

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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.