Home / 19,109.53-28,651.21-9,731.40

Finding the Fourth Proportional to 19,109.53, 28,651.21 and 9,731.40

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Solution

The fourth proportional to 19,109.53, 28,651.21 and 9,731.40 is: 14,590.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.53 : 28,651.21 = 9,731.40 : x
  2. Step 2: Convert to fraction form
    19,109.53/28,651.21 = 9,731.40/x
  3. Step 3: Cross multiply
    19,109.53x = 28,651.21 × 9,731.40
  4. Step 4: Simplify right side
    19,109.53x = 278,816,384.99
  5. Step 5: Solve for x
    x = 278,816,384.99/19,109.53
  6. Step 6: Final answer
    x = 14,590.44

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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.