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Finding the Fourth Proportional to 19,687.30, 29,530.96 and 7,201.91

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Solution

The fourth proportional to 19,687.30, 29,530.96 and 7,201.91 is: 10,802.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.30 : 29,530.96 = 7,201.91 : x
  2. Step 2: Convert to fraction form
    19,687.30/29,530.96 = 7,201.91/x
  3. Step 3: Cross multiply
    19,687.30x = 29,530.96 × 7,201.91
  4. Step 4: Simplify right side
    19,687.30x = 212,679,371.96
  5. Step 5: Solve for x
    x = 212,679,371.96/19,687.30
  6. Step 6: Final answer
    x = 10,802.87

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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.