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Finding the Fourth Proportional to 22,467.69, 30,995.80 and 13,509.90

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Solution

The fourth proportional to 22,467.69, 30,995.80 and 13,509.90 is: 18,637.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,467.69 : 30,995.80 = 13,509.90 : x
  2. Step 2: Convert to fraction form
    22,467.69/30,995.80 = 13,509.90/x
  3. Step 3: Cross multiply
    22,467.69x = 30,995.80 × 13,509.90
  4. Step 4: Simplify right side
    22,467.69x = 418,750,124.65
  5. Step 5: Solve for x
    x = 418,750,124.65/22,467.69
  6. Step 6: Final answer
    x = 18,637.88

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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.