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Finding the Fourth Proportional to 29,807.40, 44,736.30 and 12,289.80

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Solution

The fourth proportional to 29,807.40, 44,736.30 and 12,289.80 is: 18,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,807.40 : 44,736.30 = 12,289.80 : x
  2. Step 2: Convert to fraction form
    29,807.40/44,736.30 = 12,289.80/x
  3. Step 3: Cross multiply
    29,807.40x = 44,736.30 × 12,289.80
  4. Step 4: Simplify right side
    29,807.40x = 549,800,179.74
  5. Step 5: Solve for x
    x = 549,800,179.74/29,807.40
  6. Step 6: Final answer
    x = 18,445.09

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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.