Home / 19,687.40-29,531.10-4,896.20

Finding the Fourth Proportional to 19,687.40, 29,531.10 and 4,896.20

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Solution

The fourth proportional to 19,687.40, 29,531.10 and 4,896.20 is: 7,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.40 : 29,531.10 = 4,896.20 : x
  2. Step 2: Convert to fraction form
    19,687.40/29,531.10 = 4,896.20/x
  3. Step 3: Cross multiply
    19,687.40x = 29,531.10 × 4,896.20
  4. Step 4: Simplify right side
    19,687.40x = 144,590,171.82
  5. Step 5: Solve for x
    x = 144,590,171.82/19,687.40
  6. Step 6: Final answer
    x = 7,344.30

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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.