Home / 19,107.42-28,668.69-7,423.98

Finding the Fourth Proportional to 19,107.42, 28,668.69 and 7,423.98

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Solution

The fourth proportional to 19,107.42, 28,668.69 and 7,423.98 is: 11,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.42 : 28,668.69 = 7,423.98 : x
  2. Step 2: Convert to fraction form
    19,107.42/28,668.69 = 7,423.98/x
  3. Step 3: Cross multiply
    19,107.42x = 28,668.69 × 7,423.98
  4. Step 4: Simplify right side
    19,107.42x = 212,835,781.19
  5. Step 5: Solve for x
    x = 212,835,781.19/19,107.42
  6. Step 6: Final answer
    x = 11,138.91

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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.