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Finding the Fourth Proportional to 29,146.88, 43,720 and 8,370.40

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Solution

The fourth proportional to 29,146.88, 43,720 and 8,370.40 is: 12,555.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,146.88 : 43,720 = 8,370.40 : x
  2. Step 2: Convert to fraction form
    29,146.88/43,720 = 8,370.40/x
  3. Step 3: Cross multiply
    29,146.88x = 43,720 × 8,370.40
  4. Step 4: Simplify right side
    29,146.88x = 365,953,888
  5. Step 5: Solve for x
    x = 365,953,888/29,146.88
  6. Step 6: Final answer
    x = 12,555.51

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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.