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Finding the Fourth Proportional to 30,392.99, 41,964.55 and 19,644.23

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Solution

The fourth proportional to 30,392.99, 41,964.55 and 19,644.23 is: 27,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.99 : 41,964.55 = 19,644.23 : x
  2. Step 2: Convert to fraction form
    30,392.99/41,964.55 = 19,644.23/x
  3. Step 3: Cross multiply
    30,392.99x = 41,964.55 × 19,644.23
  4. Step 4: Simplify right side
    30,392.99x = 824,361,272.05
  5. Step 5: Solve for x
    x = 824,361,272.05/30,392.99
  6. Step 6: Final answer
    x = 27,123.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.