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Finding the Fourth Proportional to 29,145.30, 43,739.55 and 21,369.30

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Solution

The fourth proportional to 29,145.30, 43,739.55 and 21,369.30 is: 32,069.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,145.30 : 43,739.55 = 21,369.30 : x
  2. Step 2: Convert to fraction form
    29,145.30/43,739.55 = 21,369.30/x
  3. Step 3: Cross multiply
    29,145.30x = 43,739.55 × 21,369.30
  4. Step 4: Simplify right side
    29,145.30x = 934,683,565.82
  5. Step 5: Solve for x
    x = 934,683,565.82/29,145.30
  6. Step 6: Final answer
    x = 32,069.79

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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.