Home / 19,690.66-29,538.96-6,359.20

Finding the Fourth Proportional to 19,690.66, 29,538.96 and 6,359.20

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Solution

The fourth proportional to 19,690.66, 29,538.96 and 6,359.20 is: 9,539.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.66 : 29,538.96 = 6,359.20 : x
  2. Step 2: Convert to fraction form
    19,690.66/29,538.96 = 6,359.20/x
  3. Step 3: Cross multiply
    19,690.66x = 29,538.96 × 6,359.20
  4. Step 4: Simplify right side
    19,690.66x = 187,844,154.43
  5. Step 5: Solve for x
    x = 187,844,154.43/19,690.66
  6. Step 6: Final answer
    x = 9,539.76

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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.