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Finding the Fourth Proportional to 29,121.40, 43,701.30 and 10,653.40

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Solution

The fourth proportional to 29,121.40, 43,701.30 and 10,653.40 is: 15,987.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,121.40 : 43,701.30 = 10,653.40 : x
  2. Step 2: Convert to fraction form
    29,121.40/43,701.30 = 10,653.40/x
  3. Step 3: Cross multiply
    29,121.40x = 43,701.30 × 10,653.40
  4. Step 4: Simplify right side
    29,121.40x = 465,567,429.42
  5. Step 5: Solve for x
    x = 465,567,429.42/29,121.40
  6. Step 6: Final answer
    x = 15,987.12

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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.