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Finding the Fourth Proportional to 29,038.32, 43,521.90 and 20,673

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Solution

The fourth proportional to 29,038.32, 43,521.90 and 20,673 is: 30,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,038.32 : 43,521.90 = 20,673 : x
  2. Step 2: Convert to fraction form
    29,038.32/43,521.90 = 20,673/x
  3. Step 3: Cross multiply
    29,038.32x = 43,521.90 × 20,673
  4. Step 4: Simplify right side
    29,038.32x = 899,728,238.70
  5. Step 5: Solve for x
    x = 899,728,238.70/29,038.32
  6. Step 6: Final answer
    x = 30,984.17

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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.