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Finding the Fourth Proportional to 29,145.80, 43,740.30 and 21,369.80

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Solution

The fourth proportional to 29,145.80, 43,740.30 and 21,369.80 is: 32,070.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,145.80 : 43,740.30 = 21,369.80 : x
  2. Step 2: Convert to fraction form
    29,145.80/43,740.30 = 21,369.80/x
  3. Step 3: Cross multiply
    29,145.80x = 43,740.30 × 21,369.80
  4. Step 4: Simplify right side
    29,145.80x = 934,721,462.94
  5. Step 5: Solve for x
    x = 934,721,462.94/29,145.80
  6. Step 6: Final answer
    x = 32,070.54

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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.