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Finding the Fourth Proportional to 29,730.40, 44,557.80 and 12,180.40

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Solution

The fourth proportional to 29,730.40, 44,557.80 and 12,180.40 is: 18,255.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,730.40 : 44,557.80 = 12,180.40 : x
  2. Step 2: Convert to fraction form
    29,730.40/44,557.80 = 12,180.40/x
  3. Step 3: Cross multiply
    29,730.40x = 44,557.80 × 12,180.40
  4. Step 4: Simplify right side
    29,730.40x = 542,731,827.12
  5. Step 5: Solve for x
    x = 542,731,827.12/29,730.40
  6. Step 6: Final answer
    x = 18,255.11

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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.