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Finding the Fourth Proportional to 29,314.58, 43,971.90 and 7,127.80

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Solution

The fourth proportional to 29,314.58, 43,971.90 and 7,127.80 is: 10,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,314.58 : 43,971.90 = 7,127.80 : x
  2. Step 2: Convert to fraction form
    29,314.58/43,971.90 = 7,127.80/x
  3. Step 3: Cross multiply
    29,314.58x = 43,971.90 × 7,127.80
  4. Step 4: Simplify right side
    29,314.58x = 313,422,772.16
  5. Step 5: Solve for x
    x = 313,422,772.16/29,314.58
  6. Step 6: Final answer
    x = 10,691.70

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1.5x scale

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.