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Finding the Fourth Proportional to 29,740.40, 44,572.80 and 12,190.40

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Solution

The fourth proportional to 29,740.40, 44,572.80 and 12,190.40 is: 18,270.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,740.40 : 44,572.80 = 12,190.40 : x
  2. Step 2: Convert to fraction form
    29,740.40/44,572.80 = 12,190.40/x
  3. Step 3: Cross multiply
    29,740.40x = 44,572.80 × 12,190.40
  4. Step 4: Simplify right side
    29,740.40x = 543,360,261.12
  5. Step 5: Solve for x
    x = 543,360,261.12/29,740.40
  6. Step 6: Final answer
    x = 18,270.11

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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.