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Finding the Fourth Proportional to 29,071.80, 43,499.70 and 21,295.80

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Solution

The fourth proportional to 29,071.80, 43,499.70 and 21,295.80 is: 31,864.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,071.80 : 43,499.70 = 21,295.80 : x
  2. Step 2: Convert to fraction form
    29,071.80/43,499.70 = 21,295.80/x
  3. Step 3: Cross multiply
    29,071.80x = 43,499.70 × 21,295.80
  4. Step 4: Simplify right side
    29,071.80x = 926,360,911.26
  5. Step 5: Solve for x
    x = 926,360,911.26/29,071.80
  6. Step 6: Final answer
    x = 31,864.59

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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.