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Finding the Fourth Proportional to 19,462.79, 29,189.71 and 7,616.85

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Solution

The fourth proportional to 19,462.79, 29,189.71 and 7,616.85 is: 11,423.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,462.79 : 29,189.71 = 7,616.85 : x
  2. Step 2: Convert to fraction form
    19,462.79/29,189.71 = 7,616.85/x
  3. Step 3: Cross multiply
    19,462.79x = 29,189.71 × 7,616.85
  4. Step 4: Simplify right side
    19,462.79x = 222,333,477.62
  5. Step 5: Solve for x
    x = 222,333,477.62/19,462.79
  6. Step 6: Final answer
    x = 11,423.51

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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.